Master Mechanic, 29 piece, titanium drill bit set, for drilling wood, plastic, Wallboard, plywood, soft metals, aluminum, brass, & bronze, set contains: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64,15/32, 31/64, 1/2", 3 flats on shank reduce slipping in the chuck, 135 split point, jobber length, 3/8" shank, features 135 split point angle with 4 cutting edges, eliminates walking & provides fast penetration, titanium lasts 3 times longer than BLACK oxide bits, organized in a durable case, Clamshell.