#5 Spline Drive Impact Adapter 1in Square M.

Genius Tools Impact Adapter #5 Spline Female x 1 Inch Male Drive, Chrome Molybdenum Steel, Heavy Duty - 540508 Impact Adapter This heavy-duty impact adapter converts a #5 spline impact female connection to a 1 inch square male drive, helping you match #5 spline drive tools to 1 inch drive impact sockets and accessories. Built for professional technicians, it supports consistent fit and dependable performance in high-torque environments. Constructed from Chromium Molybdenum alloy steel (Cr-Mo) and finished with a matte black oxide coating, it is designed for strength, durability, and corrosion resistance. The overall length is 80mm (3.15 inches), and the size is permanently stamped for quick identification in a busy tool setup. Key Benefits Converts #5 spline impact female to 1 inch square male drive. Chrome molybdenum alloy steel construction supports high strength under impact loads. Heat-treated through oil quenching for durable exterior and strong inner core. Matte black oxide finish helps resist corrosion in demanding shop environments. 80mm (3.15 inch) length fits well in compact, high-torque setups. Permanently stamped size marking improves tool organization and quick identification. SKU 540508 is designed to hold up to repeated heavy use where impact-rated adapters are required. With its Cr-Mo build, oil-quenched heat treatment, and clear size stamping, it supports reliable workflow, easier tool control, and long-term durability in professional service applications.