Hex Key, Tip Size 2 mm, Long Arm Length 1 59/64 in, Short Arm Length 16 mm, Black Oxide/ OVERALL LENGTH: 49.0 MILLIMETERS NOMINAL WRENCHING SURFACE SIZE: 2.0 MILLIMETERS NOMINAL BOTH ENDS WRENCHING SURFACE SHAPE: HEXAGON BOTH ENDS EXTERNAL SPECIAL FEATURES: 25 PER PKG MATERIAL: STEEL OVERALL STYLE DESIGNATOR: 120 L-HANDLE