The Vevor 107-piece bit socket set is built for hand use and covers SAE and metric fastening needs with hex, Torx, E-Torx, tamper-proof, and extra-long bits. It uses S2 alloy steel bits and CRV sockets for durability, strength, and corrosion resistance. Precision-fit sizing and chamfered edges help improve insertion and reduce fastener wear. The included PE storage case keeps each socket organized and protected. This set is well suited for repair, maintenance, automotive, workshop, and general hand-tool applications.