Check the listing for details. Stanley Proto J5112 3/8" Drive Torque Adapter 3/8". Condition: New. Listed at 23.88 USD. 5112 Model Code: AE - Price is for 1 Each (part# 5112) This item features: -Concentric openings. -Measures 2'' from center of adapter opening to center of square drive for easy torque calculations. -High strength, thin wall design. -Applies up to 15pct more torque to fastener. -Reduces risk of fastener rounding. -Drive Size: 3/8 in. -Drive Type: Square. -Locking Type: Ball. -Material: Forged Alloy Steel. -Finish: Nickel Chrome. -Measuring System: Inch. -Type: Torque Adapter Bit. Len. = Overall Length Len. = Overall Length Model Code Model Description AAOpening Size:1/2 in, Head Width:47/64 in (opening side), Head Thickness:21/64 in (opening side), Overall Length:2 25/32 in, Wt.:0.10 lb ABOpening Size:11/16 in, Head Width:1 in (opening side), Head Thickness:27/64 in (opening side), Overall Length:2 29/32 in, Wt.:0.