About This

• Impact-Grade CR-Mo Steel Construction – Made of heat-treated chrome-molybdenum steel with a sandblasted finish. Built for high-torque extractions and impact driver use, delivering excellent durability under heavy-duty conditions – reduces the risk of cracking or stripping
• Reverse Spiral Flutes for Enhanced Grip – Internal left-hand spiral design bites deeper as you turn counterclockwise. Effectively removes stripped, frozen, rusted, rounded, or broken bolts, nuts, and screws with minimal slipping – helps reduce rounded bolt heads and knuckle injuries
• Complete 13+1 Piece Set with 3/8" Drive – Includes 13 SAE/metric sockets: 1/4", 5/16"(8mm), 3/8", 10mm, 7/16"(11mm), 12mm, 1/2", 13mm, 9/16"(14mm), 5/8"(16mm), 17mm, 11/16", 3/4"(19mm) plus a 1/4" to 3/8" hex adapter. Laser-etched markings remain readable even after grease and heavy use
• Wide Application – Auto, Machinery & Home – Compatible with hand ratchets, breaker bars, impact wrenches, and air tools. Ideal for removing stripped lug nuts, frozen exhaust bolts, rounded oil drain plugs, damaged studs, and seized screws in cars, trucks, lawn equipment, and household repairs
• Organized Storage & Safe Usage Tips – Comes in a heavy-duty blow-molded case with custom slots – keeps sockets secure and portable (palm-sized, 7"x5"). Pro tip: For best control, use with a hand tool or a low-torque setting on impact drivers. Avoid excessive impact force to help extend tool life

Overview

• Brand : OSTTE
• Material : Chrome Molybdenum Steel
• Finish Type : Oil Rubbed
• Number of Pieces : 14
• Drive System : Square, Hex