Carbide-tipped drill bit that delivers faster starts and up to 10X longer life than standard glass-and-tile bits. The multi-ground carbide Grip Point tip and asymmetric geometry start cleanly without a punch and produce straight, accurate holes with minimal wander in hard, brittle materials.

• 5/16" hole diameter
• Multi-ground carbide Grip Point tip for clean starts
• Asymmetric tip geometry increases drilling speed
• Hex shank locks into the chuck and resists spinning
• For rotary drilling only - do not use hammer mode (would crack the tile)
• Works with cordless and corded drill drivers
• Drills hard tile, porcelain, ceramic, stone, and marble