Master mechanic, 22 piece, combo sae/metric ball-hex-l key set, includes.050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" & 3/8", includes 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm & 10 mm, hex key holders keep keys organized.