Regular drill bits skate across ceramic tile and crack it before you get a hole started — then you are paying for a tile repair and a new piece of glass. Your customer is not happy and you are doing the work twice. This 3/8-inch carbide-tipped glass and tile bit is purpose-built for hard, brittle surfaces. The carbide tip holds an edge through multiple holes without dulling the way high-speed steel does on ceramic or glass. The tip geometry prevents walking — you start where you mean to, not where the bit wants to go. The 3/8-inch size covers the most common towel bar, mirror clip, and fixture mounting holes in bathroom and kitchen tile work. Standard on the bit inventory of tile setters and finish carpenters across northeast Nebraska and northwest Iowa — the bit that puts holes in tile wi Stocked at Crofton Lumber and Akron Lumber.