Multi-Bit Interchangeable Screwdrivers/nut Drivers | Reducing Washer | Small Halogen | Ul 514b, Ul File Number E148715, Us Federal Specification Number a-a-50553, Nema/ansi Fb-1, Military Specification Number W-F-406d, W-F-406e, W-F-408d, W-S-610dSouthern Tier Electric Supply