Hex Key, Tip Size 4 mm, Long Arm Length 6 in, Short Arm Length 3 in, Black Oxide/ OVERALL LENGTH: 152.0 MILLIMETERS NOMINAL OVERALL WIDTH: 76.0 MILLIMETERS NOMINAL WRENCHING SURFACE SIZE: 4.0 MILLIMETERS NOMINAL SINGLE END FEATURES PROVIDED: CUSHION GRIP WRENCHING SURFACE SHAPE: HEXAGON SINGLE END EXTERNAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: OXIDE OVERALL STYLE DESIGNATOR: 125 FIXED T-HANDLE