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. Set includes 1 each 5/64", 3/32", 7/64", 1/8", 9/64", 11/64", 7/32", 1/4", 5/16", 3/8"; and 2 each 1/16", 5/32", and 3/16". Stored in a durable case, the sliding soft-grip lock keeps case closed securely during transport and storage.