BoxoUSA's 1/4-inch drive Phillips bit sockets deliver a dedicated set of Phillips sizes for small-fastener work on electronics, interior, and fine mechanical assemblies. Manufactured from chrome vanadium steel with hardened tips, these bit sockets resist cam-out and wear even under repeated use. Sized for 1/4-inch drive ratchets and drivers, this set is built for the precision fastening tasks 1/4-inch drive tools are designed for. Direct from the manufacturer and backed by a lifetime warranty, these Phillips bit sockets keep detail work accurate and efficient.