M14 Drill Bit for Marbles of 2025
Best Choice1
NEFLUM1pc Diamond Finger Bit Segment Drill Router Bit Bottom Slab Sink Hole Cutter Granite Marble Milling Tool M14 5/8"-11 Thread,5-8-11 Thread
Main highlights- They are ideal for fast stock removal as well as truing up saw lines, which is designed to cut granite, engineered stone and marble,counter tops, kitchen tops and basins.
- The segment finger cutter bits are usually use after diamond core drill bits, fast removing dust,diamond sink wheel.
- SIZE: 1 inch/ 25mm
- PACKAGE: 1pc
- Grit: Coarse Segments size: 40mm * 4mm * 5mm
9.8Exceptional
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Value for Money2
DT-DIATOOLDT-DIATOOL Diamond Core Drill Bits Kit for Porcelain Tile Ceramic Marble Granite Concrete Hole Saw (19/28/35/45/51mm) + Finger Bits (20mm) + 2 Adapters
Main highlights- 【Specification】Totally 8pcs/box: 5pcs(19/28/35/45/51mm) drill bits + 1pc 20mm finger bit + 1pc hex shank adapter + 1pc M14 to 5/8"-11 adapter.
- 【Easy to use】Recommended machine: Angle Grinder. Recommended RPM 6000. Maximum RPM 11000.
- 【Durable and Sturdy】Vacuum brazing technology makes the diamond firmly bonded to the matrix, and the diamond exposure is higher, the processing efficiency is higher, and the service life is longer.
- 【Application】Core drills bits for dry or wet drilling holes; Diamond milling finger bit 20mm for grinding, enlarging or shaping holes on porcelain ceramic tiles, granite, masonry,marble,concrete,etc. Adapters change 5/8 Inch-11 thread to 3/8-Inch hexagon shank or M14 thread and allow your bits to fit a wider range of machines like hand drill.
- Hex adapter: 5/8"-11 male thread, 3/8" hexagon shank; M14 adapter: 5/8-11 male thread to M14 female thread;
- Finger bit: Diameter 20mm, 5/8-11 thread, total length: 65mm. Workable length 50MM, Grit #50/60.
- Drill bits: Diameter 19mm-51mm, 5/8-11 thread, total length 75mm(3 Inch);diamond height 15mm.
9.5Excellent
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3
YunseityStep Drill Bit, 3 Sizes 20mm 35mm 50mm High Sharpness Diamond Brazed Reamer Tapered with M14 Shank for Tile, Marble, Concrete with Diamond
Main highlights- [Wet & Dry Drilling Capability] Designed for both wet and dry drilling, this diamond brazed reamer bit offers users flexibility and convenience to choose their preferred drilling method without compromising tool performance or lifespan. it is suitable for edges processing on various hard surfaces.
- [Incisive Cutting Edges] Equipped with diamond particles, this step chamferer ensures incisive cutting edges, facilitating rapid and accurate drilling through various materials. it achieves aggressive hole expansion and precise chamfering.
- [High Sharpness & Wear Resisting] The step drill bit boasts high sharpness and wear . it offers efficient cutting and chip removal for a variety of applications, thanks to the brazing process and stable construction.
- [Efficient Hole Reaming] This multi layer tapered reamer features three different reaming sizes (20mm, 35mm, 50mm) to quickly enlarge holes accurately, enhancing work efficiency.
- [Easy Attachment & Versatile] Featuring a standard 14mm diameter thread on the shank, this reamer can be easily attached to 100 type angle grinders. it offers adaptability to various power tools with a conversion rod.
9.4Excellent
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4
HRTIUDSStep Drill Bit 20-35-50mm 2pcs – Diamond-Coated Multi-Layer Hole Opener for Metal, Tile, Marble & Concrete | Professional Chamfer Tool for Stone & Wood(M14)
Main highlights- The diamond stepped pagoda drill bit supports wet/dry drilling and fits type angle grinders (14mm/10mm shank). A conversion rod enables handheld drill use, while the conical design ensures efficient hole reaming and chamfering.
- The diamond core drill bit’s top-grade coating provides unmatched wear resistance. The multi-layer hole opener allows smooth, gradual hole expansion from 20mm to 50mm, perfect for tile, marble, and engineered stone.
- The Step Drill Bit 20-35-50mm features a multi-layer diamond structure with high-grade diamond particles for exceptional hardness. The lengthened threaded interface enhances durability, while the tapered reamer for metal & concrete ensures extended lifespan and precision cutting performance
- Ideal for professionals and DIYers, this multilayered cone reamer is a must-have for technicians and mechanics. Its ergonomic design and chamfer multi-layer tool functionality make it a versatile addition to any drilling tool kit.
- Designed for concrete, tiles, marble, and engineered stone, this hole expander excels in construction, decoration, and DIY projects. Three sizes (20mm/35mm/50mm) adapt to diverse needs, from plumbing to stone carving.
- 5. VERSATILE & COMPATIBLE
- 4. WIDE APPLICABILITY
- 3. DIAMOND-COATED PERFORMANCE
- 2. USER-FRIENDLY DESIGN
- 1. SUPERIOR CUTTING & LONGEVITY
9.3Excellent
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5
GenericDiamond Brazed Step Drill Bit 20mm 35mm 50mm Multi Layer Tapered Reamer for Tile Marble Concrete with Efficient Cutting, Incisive Chamfering, for Ceramic, Marble, M14 Shank
Main highlights- Wet and Dry Use: Designed for both wet and dry drilling, this diamond brazed reamer bit offers users the flexibility and convenience to choose their preferred drilling method without compromising tool performance or lifespan
- Versatile Applications: Offering efficient and accurate hole reaming, this multi layer tapered reamer features three different reaming sizes (20mm, 35mm, 50mm) to quickly and accurately enlarge holes, enhancing work efficiency
- Diamond Abrasive: Equipped with diamond particles, this step chamferer ensures incisive cutting edges, facilitating rapid and accurate drilling through various materials. It achieves aggressive hole expansion and precise chamfering
- Compatibility: Featuring a standard 14mm diameter thread on the shank, this reamer can be easily attached to 100 type angle grinders. A conversion rod is required for compatibility with handheld drill, ensuring adaptability to various power tools
- Brazed Reamer Bit: The step drill bit, undergone brazing, boasts high sharpness and wear resisting. Forged as a whole to achieve stable working and a long lifespan, offering efficient cutting and chip removal for a variety of applications
9.2Excellent
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6
OTSYSM14 Angle Grinder 6-65mm Sintering Core Bit Diamond Hole Saw Drill Bits for Marble Granite Brick Tile Ceramic Concrete Drilling,12mm
Main highlights- 5. Easy to carry: The knives are packed in plastic boxes, which is convenient for storage and homework.
- 4. It is especially suitable for concrete exterior walls in building or decoration.
- 3. Grinding on marble, granite, Shi Ying, ceramics, artificial stone and glass,
- 2. It can be used for wet and dry purposes.
- 1. Smooth cutting, perfect cutting effect.
9.1Excellent
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7
NINEROARSNINEROARS Diamond Beveling Chamfer Bits 2" (50mm) x M14 Thread Diamond Countersink Drill Bits for Shaping Enlarging Trimming Cleaning Existing Holes in Granite Marble Porcelain Tiles
Main highlights- Vacuum brazing technology: High vacuum brazing process technology is adopted to make the diamond layer more durable and even, and the service life of the tool is longer.
- Specifications：Diameter 2"(50mm), Thread: M14, Total length: 55mm, Workable length 46mm, Top Angle 53 degree,For angle grinders.
- Save money: This Diamond Countersink Drill Bits can chamfer many different sizes (0-2") eliminating the need to buy multiple different core drill bits.
- Function: Wet and dry, suitable for treating the edges of exposed holes, diamond drill bit can make the grinding surface finish higher and achieve excellent surface effect.
- Application: Not for drilling, can be used for reaming, molding, polishing, cleaning, trimming, finishing, rounding or chamfering of rocks, tiles, marbles, concrete, ceramics and other materials.
9.0Excellent
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8
RevvstarkDiamond Core Drill Bits 3/8 Inch (10mm) Tile Hole Saws Vacuum Brazed Diamond Hole Saw for Tiles Porcelain Ceramic Glass Marble Brick Granite Quartz, Dry or Wet Use, M14 Thread
Main highlights- Wide Application: Diamond hole saw are perfect for easy dry drilling on porcelain tiles, ceramics, bathroom tiles, marble, glass, granite, stone, masonry and brick; Mainly used for kitchen and bathroom renovation, installing faucets, soap dispensers and shower handles, water piping installation and more
- Vacuum Brazed Diamond Technology: Vacuum brazing technology is used to improve temperature resistance and friction resistance of diamond drill bits, high strength diamond brazed on the surface for fast drilling, heavy duty, more wear-resistant, more efficient, more durable and stronger than ordinary hole drill bit; High-quality matrix steel provides high-strength working support, which not only ensures the long-lasting performance of the core drill bit, but also improves the durability and service life
- Specifications: Diameter: 2 PCS/Pack, 10 mm (3/8 inch), Diamond Height：15 mm, Total Length: 60 mm, Thread: M14, Diamond Grit: #35/40
- High Performance & Speed and Smooth Cutting: The special U-groove tooth shape and chip evacuation design helps with chip evacuation and cooling, the wax inside the diamond core drill bit helps with cooling and lubrication, and the diamond pattern design ensures fast, smooth drilling, so you can quickly drill professional-grade, perfect holes with minimal swarf to avoid broken edges; This design minimizes overheating and reduces the risk of material damage
- Fit Machines: Diamond Core Drill Bit can be used on most angle grinders; If you encounter any problems when using the product, please feel free to tell us, we will provide you with solution
- Dry or Wet Use: The cooling wax inside the drill enables efficient dry drilling; Drilling with water further extends the life of the diamond hole saw drill bit and ensures that it can be adapted to a wide range of drilling conditions, from tile cutting to porcelain and artificial stone tasks, for the long term
8.9Very Good
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9
MBHALBYMBHALBY M10 Thread Diamond Beveling Chamfering Bit Hole Drill Reaming Cone Carve Polish Grinding Wheel for Porcelain Tiles Marble M14(D50xM10)
Main highlights- Total Length :45mm 55mm
- Scope of application: Ceramic tiles, marble, quartz stone, granite
- Material: Brazed diamond
- Grit: #50
- Diameter:38/50mm
8.6Very Good
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10
genericStep Drill Bit 20mm 35mm 50mm Multi Layer Tapered Reamer Diamond Brazed Chamferer for Tile Marble Concrete M14 Shank
Main highlights- Wet and Dry Use: Designed for both wet and dry drilling, this diamond brazed reamer bit offers users the flexibility and convenience to choose their preferred drilling method without compromising tool performance or lifespan
- Versatile Applications: Offering efficient and accurate hole reaming, this multi layer tapered reamer features three different reaming sizes (20mm, 35mm, 50mm) to quickly and accurately enlarge holes, enhancing work efficiency
- Diamond Abrasive: Equipped with diamond particles, this step chamferer ensures incisive cutting edges, facilitating rapid and accurate drilling through various materials. It achieves aggressive hole expansion and precise chamfering
- Compatibility: Featuring a standard 14mm diameter thread on the shank, this reamer can be easily attached to 100 type angle grinders. A conversion rod is required for compatibility with handheld drill, ensuring adaptability to various power tools
- Brazed Reamer Bit: The step drill bit, undergone brazing, boasts high sharpness and wear resisting. Forged as a whole to achieve stable working and a long lifespan, offering efficient cutting and chip removal for a variety of applications
8.5Good
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