The wrenches open-end is faster. The opening angle allows two actionable positions, reducing the recovery angle to 15°. the openings are machined to precision for a perfect fit with nuts and bolts. Oval handle for a more comfortable grip. Thin openings for better access in narrow areas. The wrench's open-end is faster. The opening angle allows two actionable positions, reducing the recovery angle to 15 degree. The openings are machined to precision for a perfect fit with nuts and bolts. Oval handle for a more comfortable grip. Thin openings for better access in narrow areas.