Hex Key, Tip Size 7/32 in, Long Arm Length 4 7/8 in, Short Arm Length 1 in, Black Oxide/ LONG ARM LENGTH: 3.500 INCHES NOMINAL SHORT ARM LENGTH: 0.938 INCHES NOMINAL WRENCHING SURFACE SIZE: 0.188 INCHES NOMINAL BOTH ENDS WRENCHING SURFACE SHAPE: HEXAGON BOTH ENDS EXTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL STYLE DESIGNATOR: 120 L-HANDLE