Made from heat-treated chrome vanadium (Cr-V) steel for durability and resistance to rust and breakage during high-torque applications. Heavy-duty construction designed to be compatible with most impact drivers.Size: 1/4 inch, 3/8 inch, and 1/2 inch impact driver bits, each with a 1/4 inch hex driver socket wrench adapter set. Converts standard drill bit sets into a socket set.Design features a spring ball lock for a secure fit in the driver head to prevent slipping during use. Double tooth hex design ensures a secure fit in handheld drivers, drills, or impact wrenches.Multifunctional extension bit holder provides a locked extension to your existing tools, offering added reach for tight spaces. Can be attached to any powered or cordless drill chuck or impact driver to function as a high-speed nut driver.Ideal accessory for automotive repairs, vehicle maintenance, and general use with sockets on hardware, tire nuts, lag bolts, and hex head cap screws. Suitable for use in home, workshop, factory, or construction environments.Material: Steel Color: Black + Silver Package Contents: 1 x 1/4 inch hex to 1/4 inch socket adapter 1 x 1/4 inch hex to 3/8 inch socket adapter 1 x 1/4 inch hex to 1/2 inch socket adapter 1 x Magnetic extension bit holder Note: Light and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.