Hex Key, Tip Size 3 mm, Long Arm Length 2 7/16 in, Short Arm Length 19 mm, Black Oxide/ OVERALL LENGTH: 62.0 MILLIMETERS NOMINAL WRENCHING SURFACE SIZE: 3.0 MILLIMETERS NOMINAL BOTH ENDS WRENCHING SURFACE SHAPE: HEXAGON BOTH ENDS EXTERNAL SPECIAL FEATURES: 25 PER PKG MATERIAL: STEEL OVERALL STYLE DESIGNATOR: 120 L-HANDLE