Diamond Crown HEX 12mm drill bit, MILWAUKEE — 12 mm diameter, HEX shank

MILWAUKEE Diamond Crown HEX 12mm is a 12 mm diameter drill bit with a HEX shank designed for drilling and coring in hard surfaces. The bit features a diamond cutting edge intended for controlled penetration of dense materials such as ceramic tile, porcelain, natural stone and similar substrates. Its HEX shank provides secure retention in compatible hammer or rotary drills that accept six-sided bits, reducing slippage during work and enabling efficient transfer of torque.

Advantages

The diamond cutting edge offers enhanced abrasion resistance and longer life when working with hard and abrasive materials. The 12 mm diameter is suitable for creating precise holes for anchors, pipes or fixtures, while the HEX shank design improves grip in drill chucks and quick-change adapters. The bit is engineered for stability during drilling, helping to minimise walk and deliver consistent results on tile, stone and comparable surfaces.

Suitable for

• Drilling holes in ceramic and porcelain tiles
• Coring small-diameter openings in natural stone and engineered stone
• Preparing anchor or conduit entry points in tiled walls and floors
• Use with rotary or hammer drills that accept HEX shank accessories

Key specifications

• Drill bit diameter: 12 mm
• Shank type: HEX (six-sided)
• Cutting tip: diamond-segmented / diamond-coated for hard materials
• Intended materials: ceramic tile, porcelain, natural and engineered stone
• Typical use: drilling and coring for installation and repair tasks

How to use

Fit the Diamond Crown HEX 12mm into a compatible drill or quick-change adaptor, ensuring the HEX shank is fully seated and locked. For tiled or stone surfaces, mark the hole position and start drilling at low speed to establish a groove; use light, steady pressure and avoid excessive force. For clean results and to extend bit life, use water as coolant where appropriate or follow the drill manufacturer’s guidance on wet or dry drilling. Maintain control of the tool and periodically clear debris from the hole to prevent clogging of the cutting edge.

Usage recommendations

Use personal protective equipment, including eye protection and gloves, and select a drill with torque and speed appropriate for diamond-tipped bits. When working on fragile tiles or thin materials, consider backing the workpiece or using masking tape to reduce chipping. For best performance, match drill speed and feed to the material: slower speeds and steady pressure for dense stone, moderate speeds for porcelain and tiles. Follow the drill manufacturer’s instructions for hammer function—many diamond bits perform best in rotary mode or with low-impact settings.