Universal sockets are made of 100% high quality chrome vanadium steel with a mirror chrome finish. They are built to last for a long time. Set includes 3 universal sockets in available sizes; 6.3mm / 10mm / 12.5mm (1/4 inch 3/8 inch 1/2 inch). Also works in confined areas or obstacles, allows easy access to hard-to-reach fasteners. reach. Our base joints will easily convert in four directions freely, the 90 degree swivel head locks onto the base and guides the pole for quick and easy use. Each gimbal is equipped with a spring loaded ball on both ends to lock onto the sockets and allow the tools to impact securely, preventing them from falling out. The job will be done as quickly as possible by using the right set of joints to get your nuts and bolts. This universal joint gimbal set fits all four square hole grooves with hexagonal side handle, which is used for repairing, car modification, wrench socket transformation. It is applied to vehicle transmission.