Glass and Ceramic Drill Bit GEKO HEX 12 mm

The GEKO HEX 12 mm drill bit is designed for drilling precise holes in glass, ceramic tiles and other brittle materials. Its specialized tip and HEX shank provide stable rotation and a secure grip in standard handheld drills, making it suitable for installation, repair and DIY tasks that require clean, accurate holes in fragile surfaces.

Advantages

This drill bit combines a purpose-made cutting geometry for brittle materials with a HEX shank that reduces slippage in the drill chuck. The 12 mm diameter delivers a larger, consistent hole size while the hardened tip maintains shape under moderate pressure. Its construction is intended to minimise cracking and chipping around the drilling area when used correctly.

Suitable for

• Drilling holes in glass panes and mirrors
• Making openings in ceramic wall and floor tiles
• Installation of fixtures that require holes in brittle surfaces
• Repair and renovation work where precise, clean holes are needed

When it may not be suitable

This drill bit is not intended for use on hard metals, reinforced concrete, or masonry; attempting to drill such materials may damage the bit and the workpiece. It may also be unsuitable for very thick or tempered glass where specialised equipment and techniques are required to avoid cracking.

Key specifications

• Working material compatibility: glass and ceramic materials
• Shank type: HEX shank for secure chuck engagement
• Diameter: 12 mm
• Intended use: handheld electric drills
• Tip type: hardened/specialized tip for brittle surfaces

How to use

Mark the drilling position and secure the glass or tile firmly to prevent movement. Use a low to medium drill speed and apply gentle, steady pressure to avoid overheating and cracking. Consider using water as a coolant to reduce heat buildup and to sweep dust away. Start with a small pilot indentation if necessary, then proceed until the hole is completed. After drilling, clean the edges carefully to remove any loose particles.

What to consider before purchase

• Verify that the bit diameter (12 mm) matches the required hole size for your fixture or fitting.
• Confirm compatibility with your drill chuck and the advantage of a HEX shank for reduced slippage.
• Check the material type—this bit is optimised for glass and ceramic, not for metal or masonry.

Usage recommendations

Use low to medium speed, steady pressure, and cooling (water) when drilling; secure the workpiece and avoid drilling tempered glass without professional guidance to reduce the risk of cracking.