Wrench Sizes: 9/16 inch on one end and 5/8 inch on the opposite end. Wrench Type: Double box-end (non-adjustable fixed design). Drive Configuration: 12-point openings. Design Profile: 15-degree offset box design for easier knuckle clearance and fastener accessibility. Finish: Full polish chrome finish that provides high-luster aesthetics and easy cleaning. Fastener Protection: Incorporates a "lobular" off-corner loading geometry, which redirects rotational forces onto the flat surfaces of nuts or bolts rather than the points, preventing fastener rounding.