19mm M10 Diamond Drill Bits for Stone

Compact, production-grade diamond core bits for stone drilling on hand drills and table drills. Tuned metal-bond segments deliver fast starts and steady feed so installers can cut clean holes with fewer chips—safely, consistently, and on schedule.

What It Is & Why It Wins

• Metal bond with diamond segments
→ Maintains sharp cutting edges on granite, marble, and porcelain.
→ Fast drilling with less burnishing and fewer edge defects.

• Optimized for construction hole cutting
→ Stable entry and guided feed on jobsite setups.
→ Fewer reworks and smoother finishing around fittings.

• Total length: 67 mm (compact body)
→ Better control on hand drills; fits tight spaces near backsplashes and corners.
→ Reduced runout and improved hole roundness.

• Operator-safety focused design
→ Predictable cutting action; compatible with wet cooling.
→ Lower heat and dust risk for safer day-to-day operations.

• Color & finish options (black/red/custom; spray painting)
→ Quick size ID and corrosion protection.
→ Easier inventory management and cleaner presentation for clients.

Notes: Wet drilling is recommended on stone for edge quality and tool life. Use a guide/template for a clean start, especially on polished surfaces.

Use Scenarios & Buyer Pain Points

Countertop cut-outs (granite/marble): A compact 67 mm body keeps the drill stable; metal-bond segments grind efficiently under light feed, reducing chip-out around faucet and accessory holes.
Porcelain wall penetrations: On dense tiles, intermittent pecking plus water cooling maintains segment exposure; color-coded finishes speed up bit selection on ladders or scaffolds.
Workshop table drilling: On drill presses, controlled RPM and steady coolant produce repeatable diameters for hardware installation and anchors—less rework, tighter tolerances.

Differentiators for Procurement & Ops

• Speed + Safety: Segment design supports fast drilling while keeping temperatures controlled for operator safety.

• Inventory clarity: Black/red/custom colors simplify SKU picking; spray finish protects stocks in humid sites.

• OEM readiness: Diameters, labeling, and packaging can be tailored to your SOPs for consistent results across teams and regions.

FAQs

• Can these bits run on a regular hand drill?
Yes. They are designed for hand drills and table drills. Keep RPM moderate and use water for best edge quality.

• What sizes are available?
6.5–50 mm OD as standard. Other diameters can be discussed under OEM.

• Which cooling method should I use on stone?
Wet drilling is recommended to manage heat, expose fresh diamonds, and reduce chipping.

• How do I reduce entry chips on polished stone?
Tape the surface, start at a slight angle to prevent skating, then level out. Use a template or guide for accuracy.

Visual Guidance (for your media team)

• Close-up: metal-bond diamond segment detail on a 20–35 mm bit.

• In-use: hand drill with water feed drilling a faucet hole in granite (show slurry evacuation).

• Color lineup: black/red/custom bits arranged by diameter for quick ID.

• Press setup: table drill fixture showing perpendicular entry and coolant management.

Call to Action

Specify the exact diameters and colors you need, and we'll build a set that matches your workflow. Speak with SENMINE—a trusted manufacturer and supplier of diamond tools for stone. Contact Us for a quote, lead times, or an OEM sample pack.

Tips: When using a hand electric drill, make a mark on the cutting material in 45 degree angle. Then you can drill holes in vertical.