The Irwin 5/16" glass and tile drill bit features a precision-ground tungsten carbide spear point that cuts clean, round holes in glass, ceramic tile, mirrors, and marble without chipping or cracking. A mid-range size well suited for mounting hardware and anchors in tiled walls and glass surfaces.

• 5/16" cutting diameter with tungsten carbide tip
• Unique spear point design minimizes chipping and breakage
• Drills glass, ceramic tile, mirrors, and marble
• Straight shank fits standard drill chucks
• Long-lasting carbide construction for repeated use

Tip: Apply masking tape at the drill point to prevent wandering, use light pressure, and keep the area wet to reduce heat buildup and extend bit life.