Milwaukee Shockwave Impact Duty socket set, standard, impact rated: yes, measurement system: SAE, 12 pc, 6 points, included socket size: 5/16 in, 3/8 in, 7/16 in, 1/2 in, 9/16 in, 5/8 in, 11/16 in, 3/4 in, 13/16 in, 7/8 in, 15/16 in and 1 in, 3/8 in drive, hex socket shape, case, for use with: 3/8 in drive impact wrenches, drivers, ratchets and adapters, forged steel, black.