Adapters -Universal 0.25 Inch Joint Socket Ratchet Angle Extension Bar Socket Adapter Description: Reach all fasteners, even in tight spots with our ball spring impact universal joint set, thanks to the smooth and hassle-free 360 degree rotation feature. Universal joint sockets are made of heavy-duty, heat-treated chrome-molybdenum alloy steel. Bead/perforation design, the bead is easy to change the sleeve. Perforation is more suitable for working at height. Carbon black, phosphating, anti-rust. Choice: style 1Length 4cm at interface 0.63cm style 2: Length 5cm at interface 1cm style 3: Length 7cm at interface 1.25cm. Package includes: 1x Universal Common Socket Note: Transition: 1cm=10mm=0.39inch Please allow slight 0-1cm difference due to manual measurement. Colors may appear differently depending on the light and how the listing is displayed. Thank you for your understanding and attention. I wish you a pleasant shopping experience!