Diamond drill bit Bosch 2608599052, 12 mm diameter, length 66 mm

Diamond drill bit Bosch 2608599052, 12 mm diameter, length 66 mm is a straight-shank cutting tool engineered for accurate hole making in hard, brittle surfaces. The bit features a diamond cutting edge designed to deliver clean holes with minimal chipping when used on ceramic, tile, glass and similar materials. Its 12 mm cutting diameter and 66 mm overall length provide sufficient depth control for typical installation and repair tasks while remaining compatible with handheld drills and drill presses accepting straight shanks.

Advantages

The diamond cutting edge offers superior wear resistance and maintains cutting performance over longer cycles compared with standard masonry bits. A straight shank design ensures compatibility with a wide range of drill chucks and allows stable rotation at recommended speeds. The 12 mm diameter gives a standardized hole size for fixtures and fittings, while the 66 mm length balances reach and rigidity to reduce wobble and improve hole accuracy.

Suitable for

• Drilling holes in ceramic wall and floor tiles for plumbing and electrical fixtures
• Cutting precise openings in glass and mirrors for mounting hardware
• Creating clean holes in porcelain and stoneware sinks or sanitary ware
• Use with handheld drills and drill presses that accept straight-shank bits

Key specifications

• Cutting diameter: 12 mm
• Overall length: 66 mm
• Shank type: straight shank suitable for standard drill chucks
• Cutting edge: diamond-coated tip for hard and brittle materials
• Primary materials: intended for ceramics, tiles, glass, porcelain and similar surfaces

How to use

Secure the diamond drill bit in the drill chuck so the shank is clamped firmly and concentric. Mark the drilling position on the workpiece and, where possible, use masking tape to reduce surface slipping. For fragile materials such as ceramic or glass, start drilling at low speed with light pressure to create a shallow pilot recess, then increase speed moderately while maintaining steady, even pressure. Use water or a coolant to keep the diamond tip cool and to flush away debris, extending the bit life. Withdraw periodically to clear slurry and check progress; avoid excessive force or side loading that can chip the material or damage the bit.

Usage recommendations

Operate the drill at low to moderate RPMs recommended for diamond-tipped bits and use continuous water cooling when working on glass and ceramics. When possible, employ a drill guide or jig to maintain perpendicular alignment and prevent bit walking. Replace the bit if the cutting performance declines significantly or if the tip shows visible wear.