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Precision core bits engineered for clean, chip-controlled holes in granite—from countertops and stairs to façades and anchor points. With broad connector options and tall segment choices, these bits deliver stable feed, round holes, and repeatable results on site or at the bench.
• Granite-tuned core bit design
→ Steady cutting on quartz-rich slabs and edges
→ Fewer micro-chips around fittings and fixtures
• Wide diameter range: 6–150 mm
→ One lineup covers pilot holes to faucet/duct cutouts
→ Less tool swapping, faster daily throughput
• Segment height: 10–20 mm
→ More usable diamond for demanding materials
→ Longer service intervals and predictable cost per hole
• Multiple connectors (M14, M10, 5/8"-11, GAS 1/2, Hex, Triangular shank)
→ Fits grinders and drills across your fleet
→ Easy deployment in shop and field
• Wet-drilling ready
→ Cooler matrix and better swarf evacuation
→ Cleaner edges and longer bit life (use water whenever possible)
Countertop fabricators: Need 35 mm faucet holes with minimal edge repair. Tall segments (10–20 mm) keep cut rates steady on thick, quartz-rich granite; wet slurry clears fines for cleaner rims.
Install teams & MRO: Mixed tools across sites. With M14 / 5/8"-11 / GAS 1/2 / Hex / triangular shank, crews mount the same bit family on grinders or drills—less downtime hunting adapters.
Façade & anchor drilling: Consistent roundness matters. Stable feed with wet cooling reduces heat tint and helps maintain diameter tolerance for mechanical fasteners.
• Can I run these on an angle grinder?
Yes—use M14 or 5/8"-11. For best edge quality, wet-drill and use a guide to start.
• What segment height should I choose for thick granite?
20 mm segments offer extended life for frequent or deep holes; 10 mm is efficient for standard countertop work.
• Dry vs wet—what's recommended on granite?
Wet is strongly recommended to manage heat, carry swarf, and reduce chipping; it also extends bit life significantly.
• Will these connectors fit my drill press?
GAS 1/2, Hex, and triangular shanks support common presses and hand drills; confirm chuck/adapter before use.
• MOQ and OEM?
MOQ is 10 pcs/size. We support OEM diameter sets, labeling, and packaging.
• Macro rim shots: 10 mm vs 20 mm segment height on the same diameter
• In-use photo: Wet drilling a 35 mm faucet hole in granite (show water ring & slurry)
• Connector lineup: M14, M10, 5/8"-11, GAS 1/2, Hex, triangular shank labeled side-by-side
• Edge quality close-ups: Entry and exit rims on polished granite after wet drilling
Specify your diameter mix and preferred segment height, and we'll configure a set for your workflow. Partner with SENMINE—a trusted manufacturer and supplier for granite drilling solutions. Contact Us to request pricing, samples, or an application review.
Precision core bits engineered for clean, chip-controlled holes in granite—from countertops and stairs to façades and anchor points. With broad connector options and tall segment choices, these bits deliver stable feed, round holes, and repeatable results on site or at the bench.
• Granite-tuned core bit design
→ Steady cutting on quartz-rich slabs and edges
→ Fewer micro-chips around fittings and fixtures
• Wide diameter range: 6–150 mm
→ One lineup covers pilot holes to faucet/duct cutouts
→ Less tool swapping, faster daily throughput
• Segment height: 10–20 mm
→ More usable diamond for demanding materials
→ Longer service intervals and predictable cost per hole
• Multiple connectors (M14, M10, 5/8"-11, GAS 1/2, Hex, Triangular shank)
→ Fits grinders and drills across your fleet
→ Easy deployment in shop and field
• Wet-drilling ready
→ Cooler matrix and better swarf evacuation
→ Cleaner edges and longer bit life (use water whenever possible)
Countertop fabricators: Need 35 mm faucet holes with minimal edge repair. Tall segments (10–20 mm) keep cut rates steady on thick, quartz-rich granite; wet slurry clears fines for cleaner rims.
Install teams & MRO: Mixed tools across sites. With M14 / 5/8"-11 / GAS 1/2 / Hex / triangular shank, crews mount the same bit family on grinders or drills—less downtime hunting adapters.
Façade & anchor drilling: Consistent roundness matters. Stable feed with wet cooling reduces heat tint and helps maintain diameter tolerance for mechanical fasteners.
• Can I run these on an angle grinder?
Yes—use M14 or 5/8"-11. For best edge quality, wet-drill and use a guide to start.
• What segment height should I choose for thick granite?
20 mm segments offer extended life for frequent or deep holes; 10 mm is efficient for standard countertop work.
• Dry vs wet—what's recommended on granite?
Wet is strongly recommended to manage heat, carry swarf, and reduce chipping; it also extends bit life significantly.
• Will these connectors fit my drill press?
GAS 1/2, Hex, and triangular shanks support common presses and hand drills; confirm chuck/adapter before use.
• MOQ and OEM?
MOQ is 10 pcs/size. We support OEM diameter sets, labeling, and packaging.
• Macro rim shots: 10 mm vs 20 mm segment height on the same diameter
• In-use photo: Wet drilling a 35 mm faucet hole in granite (show water ring & slurry)
• Connector lineup: M14, M10, 5/8"-11, GAS 1/2, Hex, triangular shank labeled side-by-side
• Edge quality close-ups: Entry and exit rims on polished granite after wet drilling
Specify your diameter mix and preferred segment height, and we'll configure a set for your workflow. Partner with SENMINE—a trusted manufacturer and supplier for granite drilling solutions. Contact Us to request pricing, samples, or an application review.
