Uxcell a15060800ux0200 1/2" To 3/8" M/F RATCHET Drive Air Socket Reducer Adapter Main material: chrome-vanadium steel; Package Content: 1 x socket adapter Product Name: socket adapter; weight: 47G Main Color: Silver Tone; overall size: 35 x 22mm/1.4" x 0.87" (l*max.D) Square socket size: 12.7mm/ 1/2" Square head size: 9.5mm/ 3/8"