Drill bit set for glass and ceramics GEKO 8 pcs HEX 3–12 mm (120 grit)

Set of 8 GEKO drill bits designed specifically for drilling glass and ceramic materials. The kit contains HEX-shank bits with diameters ranging from 3 mm to 12 mm and a 120 grit abrasive surface, intended to produce clean, precise holes in tile, glass panes, ceramics and other brittle surfaces. Bits are compatible with standard drill chucks that accept HEX shanks and are suitable for tiling, bathroom fixtures, glazing and repair tasks where controlled, low-chipping drilling is required.

Advantages

The GEKO 8-piece set provides a selection of commonly used diameters so you can match bit size to the application without excess tool changes. HEX shanks offer secure grip in the chuck and reduce slippage during operation. The 120 grit abrasive finish is optimized for cutting brittle materials with reduced cracking and smooth hole edges. The compact set simplifies storage and transport and supports repeatable, accurate results when used with appropriate drilling speed and support.

Suitable for

• Drilling holes in ceramic wall and floor tiles
• Creating openings in glass panes and mirrors
• Working with porcelain and other fired ceramics
• Small repair and installation tasks around bathrooms and kitchens

Key specifications

• Number of pieces: 8
• Shaft type: HEX shank for secure chuck grip
• Diameter range: 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 10 mm, 12 mm
• Abrasive grit: 120 grit surface suitable for brittle materials
• Intended materials: glass, ceramic, tile, porcelain

How to use

Select a drill bit with the appropriate diameter for the required hole and secure it in a drill chuck that accepts HEX shanks. Mark the drilling point and, if possible, support the workpiece from the opposite side to reduce vibration. Begin drilling at low speed with light, steady pressure to allow the abrasive grit to wear through the surface; avoid high speed and excessive force to prevent cracking. Use cooling or intermittent pauses if drilling for extended periods to manage heat build-up. After reaching the desired depth, withdraw the bit slowly while the drill is running at low speed to minimize chipping.

Usage recommendations

Use protective eyewear and gloves when drilling glass and ceramics. For best results, clamp or otherwise stabilize the workpiece, start with a pilot indentation or tape to prevent wandering, and maintain low RPM with steady pressure. If drilling thicker or tempered glass, verify material suitability first and consider using specialist tools.