Performance Tool W38860 8-piece 3/8 inch Dr. Screwdriver Bit Socket Set. Crafted with chamfered edges for easier insertion and removal from recessed fasteners, these sockets are made from heat-treated chrome vanadium alloy steel for robustness. Durable S2 steel bits. With a polished nickel chrome-plated finish for corrosion resistance, this set includes sizes ranging from 1/8 in to 5/16 in for slotted bits and #0 to #3 for Phillips bits. Comes with a steel socket clip rail.