Hollow-shaft, fastener-fit design accommodates stacked circuit boards as well as longer bolts and studs. Color-coded ends along with the patented Tip-Ident® system make selecting the right tool for the job a snap. Comfortable cushion-grip handles help minimize hand stress, allowing you to put more torque on problem fasteners. Flange-anchor construction ensures that shafts remain solidly seated in their handles. Strong, chrome-plated steel provides corrosion-resistant durability. Tool Type: Nut Driver; Tip/Socket Type(s): SAE Socket; Tip/Socket Size(s): 3/16; 1/4; 5/16; 11/32; 3/8; 7/16; 1/2.