Durable construction: forged from hardened chrome vanadium steel with a chrome-plated, polished finish for corrosion resistance and long service life. High articulation for tight spaces: the universal joint allows a maximum bending angle of almost 90° so you can reach fasteners in narrow or awkward locations. Precision fit and reliable performance: finely machined to meet or exceed ANSI/ASME standards to ensure proper fit on any compatible tool and safe torque transfer. Secure socket retention: designed to snap onto your drill or driver; each extender includes a spring-loaded ball at the attachment point to lock the socket in place and prevent slipping or dropping. Broad compatibility: works with standard socket drill extensions and compatible drive tools that meet ANSI/ASME sizing and retention norms. Easy to use: attach the adapter end to your drill or driver, engage the spring-loaded ball, and you’re ready to work at an angle without losing socket engagement. Typical applications Automotive repair: reach spark plugs, alternator bolts, and other fasteners located behind engine components or in crowded engine bays. Plumbing and HVAC: access nuts and fittings behind piping or inside junction boxes where straight-line access is blocked. Equipment and machinery maintenance: remove or install fasteners in gearboxes, conveyors, and industrial equipment where space constraints prevent direct access. What you get A rugged universal joint that improves access and keeps sockets secure during angled driving or removal, compatible with tools built to ANSI/ASME standards.