Sizes:This set includes 5 6 7 8 9 10 11 12 13 mm length :40mm shank size :1/4inch Color:Silver farber/Black Material: Steel Feature: Package includes: 9 pcs metric power sleeve Precision Milled And Sandblasted Great For Working With Hard To Reach Screws Storage Holder Organizer Fits On Most Work Belts Must-Have Accessory Set For Power Drills And Impact Drivers Unlimited Uses In Automotive, Hardware, Hobby, Home, Etc... Standard Hex Shank Fits Power Drills, Cordless Screw Guns, Hand Screwdrivers, Etc. Fits All Power Drills, Screwguns, Cordless & Magnetic Drivers Sandblasted, Chrome Vanadium Steel Bits