Westward 36A158 Box End Wrench These double-ended box-end wrenches offer efficiency with their two-metric sizes, allowing you to tackle a wider range of fasteners without needing to switch tools frequently. Each enclosed head grips the fastener securely from multiple angles, minimizing the risk of slipping compared to open-end wrenches. This secure grip translates to increased torque, meaning you can apply more turning force with less effort. Material / Alloy Steel Finish / Chrome Head Size / 27 mm; 30 mm Overall Length / 15-1/4 inch Head Offset Angle / 40 ° Measurement Type / Metric Head Type / Standard Tether Style / Tether Capable Nonsparking / No Insulated / No Non-Magnetic / Yes Wrench Shape / Straight Box End Type / 12-Point Box End Wrench Length Style / Standard Corrosion Resistant / Yes Ratcheting / No Reversing / No Handle Type / One Piece Grip Style / Plain Handle Color / Silver Number of Points / 12 Single End/Double End / Double End Min. Arc Swing / 0 ° Standards / ANSI B107.100