Magnusson Chrome Vanadium Steel Hex Key Set, HX16 is a great tool to have for DIY projects Set includes 15 imperial keys with long arms (head width: 0.028", 0.035", 0.05", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" and 3/8") and 15 metric keys with short arms (head width: 0.7 mm, 0.9 mm, 1.3 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm and 10 mm) Comes with a carry case