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The ROBERT BOSCH TOOL GROUP GT700 is a 5/8 inch carbide-tipped drill bit engineered for clean, accurate drilling through glass and tile. The precision tip design eliminates bit wander and walking on contact, which is a common failure point when starting a hole on smooth, hard surfaces. The reinforced carbide head resists cracking under load and extends service life compared to standard masonry tips. An innovative cutting geometry allows the bit to move through material faster without sacrificing hole quality. This bit ships in a 3-pack and is suited for tile setters, glaziers, plumbers, and general contractors working with glass, ceramic, or porcelain tile surfaces.
The GT700 is appropriate for use in residential and light commercial settings where glass panels, ceramic wall tile, porcelain floor tile, or similar hard, smooth materials require precision drilling. The 3-flat shank design interfaces securely with standard drill chucks to prevent slippage during operation. The 3-pack quantity suits jobsite use where bit wear or breakage across multiple holes is expected.
Designed for drilling glass, ceramic tile, and porcelain tile surfaces using standard corded or cordless drills fitted with a keyed or keyless chuck that accepts a 3-flat shank.
Drilling glass and tile should be performed by a qualified tradesperson familiar with the material's brittleness and heat sensitivity. Use low drill speed with consistent, moderate pressure and apply water or cutting fluid at the drill point to manage heat buildup and reduce the risk of surface cracking. Secure the workpiece firmly before drilling and avoid hammer-drill mode, which will fracture tile and glass. Always wear appropriate eye protection when working with these materials.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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