Irwin 18-Piece Black Oxide Drill Bit Set

Bits are ideal for drilling in metal, wood, and plastics. Features include black oxide finish, parabolic flute design for greater wear protection and bit strength, and 135 deg split point to reduce walking and no-slip starting, and no-spin hex shanks. Set includes 1/16" (2), 5/64", 3/32" (2), 7/64", 1/8" (2), 9/64", 5/32", 11/16", 3/16", 13/64", 7/32", 1/4", 5/16", 3/8" and 1/2". Stored in a durable case, the sliding soft-grip lock keeps case closed securely during transport and storage.