General description This 3 piece spring loaded universal joint set includes 1/4"", 3/8"" & 1/2"" drive joints, designed for easy fitting onto sockets and providing access to fasteners in confined spaces. Their low profile design makes them ideal for use in engine bays and under dashboards, while the spring mechanism prevents the joints from becoming loose over time, ensuring they remain easy to handle. Technical specifications Sizes: 1/4""D, 3/8""D, 1/2""D Material: Chrome vanadium Hardness: 38-46 HRC Other information Presented in an EVA foam tray for convenient storage and reduced packaging waste.