Hex Key, Tip Size 1/4 in, Long Arm Length 5 1/4 in, Short Arm Length 1 1/8 in, Black Oxide/ LONG ARM LENGTH: 5.250 INCHES NOMINAL SHORT ARM LENGTH: 1.125 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.250 INCHES NOMINAL BOTH ENDS WRENCHING SURFACE SHAPE: HEXAGON BOTH ENDS EXTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL STYLE DESIGNATOR: 120 L-HANDLE