Drill bit for glass and tiles GEKO model G39708 8 x 75 mm

The GEKO G39708 drill bit for glass and tiles is a purpose-built cutting tool with an 8 mm diameter and 75 mm overall length, designed specifically for controlled drilling in fragile materials such as glass and ceramic tiles. Its geometry and material are optimized to reduce chipping and cracking when used at low speeds with appropriate lubrication. The bit is compatible with handheld drills and drill stands commonly used for plumbing, sanitary and tiling installations.

Advantages

This drill bit provides precise, stable drilling in brittle surfaces thanks to a tip profile that limits lateral slipping and a shaft length that reaches through tiling layers while maintaining control. The 8 mm diameter delivers a clean hole suitable for many common fasteners and fittings. When used correctly with reduced rotational speed and cooling or lubrication, the bit minimizes edge breakage and extends service life compared with standard masonry bits.

Suitable for

• Drilling holes in glass panes for fixtures and fittings
• Creating openings in ceramic wall and floor tiles for plumbing pipes
• Preparing tile surfaces for wall anchors and sanitary installation

Key specifications

• Cutting diameter: 8 mm
• Overall length: 75 mm
• Material and tip geometry suitable for brittle materials such as glass and ceramic tiles
• Intended for use at low rotational speeds with lubrication or cooling
• Compatible with standard handheld drills and drill stands

How to use

Mount the drill bit securely in the chuck and ensure the drill is set to a low speed. Mark the drilling point clearly and, if possible, support the workpiece from behind to reduce vibration. Apply gentle, consistent pressure and maintain a steady perpendicular orientation to the surface. Use a lubricant such as water or a cutting fluid to cool the bit and reduce friction; pause periodically to allow cooling and inspect the hole for cracking. For improved control on smooth surfaces, consider using masking tape over the drilling point to reduce tip wandering.

Usage recommendations

Use the bit only for glass and ceramic tiles, operate at low speeds, and apply water or cutting fluid for lubrication. Avoid excessive pressure and high RPM to prevent chipping. For through-holes in fragile materials, back up the material when possible and allow the bit to cool between passes.