Master Mechanic, 18 piece, combination, short & long arm, hex-l key set, includes short .050", 1/16", 5/64", 3/32", 7/64", 1/8", 5/32", 3/16" & 7/32", includes long: 1/16", 5/64", 3/32", 1/8", 9/64", 5/32", 3/16", 1/4" & 5/16", hex key holder keeps keys organized.