"DESCRIPTION Features: Removing a nut or bolt with rusted or rounded head can be a real pain. The Kincrome Bolt Extractor Set offers a quick and simple solution to the problem. This set covers a range of common metric sized sockets from 8mm to 19mm. This kit is made from high quality, chrome plated SCM-435 Chrome Molybdenum Alloy to provide excellent strength and durability. These 3/8"" drive sockets are extremely versatile and can be used with either a hand ratchet or even an impact wrench. Thanks to Kincrome's unique design, this bold extractor set will remove up to 85% of rounded fasteners with ease. Made from high quality SCM-435 Chrome Molybdenum Alloy, Chrome plated Ideal for rounded off / painted over / rusted tight Bolts Suit Right and Left hand threads Extremely versatile, can be used with hand ratchet, or impact wrenches Loosens up to 85% rounded fasteners Unique Design Specs: Brand - KINCROME Drive - 3/8"" Finish - Chrome Plated Measurement System - Metric Pieces - 9 Warranty - Kincrome Quality Material - Chrome Molybdenum (Cr-Mo) Contents: 3/8"" Drive: 8mm, 10mm, 11mm, 12mm, 13mm, 14mm, 16mm, 17mm and 19mm REVIEWS"