Universal Tool: This Unique And Sturdy Design Allows The Wrench To Automatically Adjust To Any Shape Of Nut, Be It Hex Nut, Wing Nut, Lag Bolts, Set Screw . You Can Tighten Or Loosen Any Fastener The Size Of That Particular Wrench. It DoesnT Matter What Shape The Nut Is. Professional And Widely Used Tools - Thick And Sturdy Professional Tool Designed To Tackle All Your Projects At Home, In The Store, Or At Work Anywhere, Anytime Outdoor, Bicycle, Home, Kitchen, Indoor, Outdoor Vehicle, Compatible With Car Spark Plugs. Socket Wrench Compatibility Channel Bolts, 6 Point, 12 Point, Torx, Damaged Square Spots And Any Standard Or Metric Size, 8Mm (5/16), 10Mm (3/8), 11Mm (7/16 ), 13Mm (1/2), It Appears On The Key With Digital Engravings To Show The Corresponding Sizes. Portable: This Universal Wrench With A Compact And Lightweight Design Allows You To Take It With You Instead Of Carrying A Set Of Wrenches Of Different Sizes For The Same Job That This Wrench Can Do In A Finer Way. Multilateral: Thick And Sturdy Professional Tool Designed To Tackle All Your Projects At Home, Workshop Or On The Job Specification: 8-19Mm ,