Drill Set-wire gauge – sizes in U.S. inches Including sliding top index  storage dispenser. Twenty high  speed steel drill bits with handy slide-top box that  releases only chosen drill bit.

Measures 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73,74, 75, 76, 78,79, 80.