5/16 x 2-7/8-In. Glass & Tile Drill Bit Brand_American Hardware Manufacturing Blades stay sharp three times

Blades stay sharp three times longer than carbon blades

uncompromising construction built to deliver

Ideal for trees with a maximum 8' height and 5

Strong enough to degrease an engine

stronger lawn from the roots up

5/16 x 2-7/8-In. Glass & Tile Drill Bit Brand_American Hardware Manufacturing Blades stay sharp three timesMaster Mechanic, 5 16" x 2 7 8", Glass & Tile Carbide Tipped Drill Bit, Spear Pointed Tip Reduces Breakouts When Drilling From 1 Side To The Other, May Be Used With Any 3 8" Drill Press Or Variable Speed Drill, Zinc Finish, Recommended For Use In Ceramic Tile, Mirrors Or Glass Of All Types, Marble, Tile, Vitrolite & China, Carded.