This Irwin Black Oxide Drill Bit Set includes dril What's Included: 1/16 in. (x2), 5/64 in., 3/32 in. (x2), 7/64 in., 1/8 in. (x2), 9/64 in., 5/32 in., 3/16 in., 7/32 in., 1/4 in., 5/16 in., and 3/8 in.Durable rubber-sided case for added impact resistanceSliding latch design provides added security135 degree split point prevents walkingBlack oxide coating resists corrosion15 piece set includes two 1/16 in., two 3/32 in., one 7/64 in., two 1/8 in., one 9/64 in., one 5/32 in., one 3/16 in., one 7/32 in., one 1/4 in., one 5/16 in. and one 3/8 in. drill bits