These tough Torx bit sockets are built for the toughest jobs. Powerbuilt 6 Piece 1/4 Inch Drive Torx Bit Socket Set features a 2-piece press-fit design for strength and durability. The set includes 6 common-sized socket bits T-10, T-15, T-20, T-25, T-27, and T-30 for wide coverage. Socket bodies are constructed of tough mirror-polished Chrome Vanadium steel and mated to S-2 industrial-grade steel bits, ensuring a lifetime of reliable use. The hardened S2 steel bits are precision ground for a tight fit onto Torx fasteners. The bit’s Zinc Phosphate coating allows for a protective non-slip function preventing bolts from striping. Dual grease rings and high visibility sizing markings allow easier handling and quick identification.