Pit Bull CHIB02252 Hammer Drill Set SAE with Case Heat treated. Alloy steel Sizes: 3/16", 1/4"x 110mm; 1/4", 5/16", 3/8"x160mm; 3/8", 1/2"x210mm; 3/8", 1/2", 5/8", 3/4"x450mm 11 piece SDS Drill Set Nice wood carrying case