Size & System: 5/8" standard fractional SAE measurement. Wrench End Types: Combines a standard open end with an enclosed 12-point ratcheting box end. Reversible Selector: Built-in reversing lever on the low-profile box end to change ratcheting direction without flipping the tool. Precision Gear: Features a 72-tooth precision machined gear requiring only a 5-degree swing arc, making it highly effective for confined spaces. Ergonomics: Designed with a 12-degree offset angle on the box end to clear obstacles and safeguard your knuckles