The Husky 1 in./4 in. Drive Impact Driver Socket Adapter 6-piece Set is a must-have for a DIY or professional's tool box. This driver socket adapter set is designed to be used with impact drivers and sockets, these impact drill adapters work on 3 different drive sizes of standard and deep sockets (1 in./4 in., 3 in./8 in. and 1/2 in. drives). For strength and durability, they are made of heat-treated steel and offer a black oxide coating for corrosion resistance. The impact socket driver adapter set quickly converts any power drill or 1 in./4 in. impact driver into a socket driver to quickly tighten or remove fasteners. This set offers both 2.5 in. and 6 in. adapters for all 3 drive sizes plus a plastic storage caddy to keep the socket adapters together and organized.