Features: The swivel head reverses and locks from drilling to driving, easily switches between bits in seconds. Works with its own electric drill. Perfect for DIY, home and general building/engineering using. . Specification:Material:HSS Case Size: 19.5*4.4*7.5cm/7.7*1.7*3 inch (Approx.)Drill Size:Screwdriver philips bits: PH0,PH1,PH2,PH3*2Screwdriver flat bits: 1/8" (3.2mm),5/32"(4mm),3/16" (4.8mm),1/4"(6.3mm) * 2Reaming Drill Bits: 1*3/32" 2.4mm, 1*1/8" 3.2mm Package Contents:1 * Drill Guide for Drill Bits8 * Phillips Bits8 * Flat Head Bits2 * Countersinks1 * Allen KeyNote: The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.