The GripEdge Tools  64-pc RPT 1/4" Drive Low Profile Master Dual Action Driver Set, No. MDDA64S, is designed for accessing fasteners in tight spaces. The set includes 59 bits in hex, star, Star Plus, and triple square profiles, a 7/16" hex flex-head ratchet, and multiple drive adapters. The bits feature RPT technology that provides up to 50 percent more grip on intact fasteners and up to 400 percent more on damaged fasteners. Each bit measures 22mm long and features laser-etched size markings. The set comes in a durable case with a removable EVA foam tray for organization.