This 13 piece drill set comes in a convenient carrying case with bit sizes engraved for organization. Each bit has high alloy steel for long life, strength and durability. They are high performance, industrial quality bits. The standard sizes: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 (inch). Metric sizes 1.5, 2.0, 2.5,2.0, 3.2, 3.5, 4.0,4.5, 4.8, 5.0,6.0,6.5(mm) Comes on a blister card with hanging hole.