This 3 Pcs Thin Wall Deep Impact Socket Set is designed to reach recessed lug nuts with an impact tool. The set includes three sizes: 17 mm, 19 mm, and 21 mm, covering common lug nut sizes found on many passenger cars, SUVs, and light trucks. Key benefits - Thinwall design enables access to deep or recessed lug nuts where standard sockets cannot reach. - Deep sockets provide added reach to clear brake components, calipers, and wheel housings during wheel changes. - Built for impact use, delivering reliable torque without rounding fasteners. - Compact 3-piece set ensures you have the right size on hand for most wheel service tasks. - Precisely machined to fit lug nuts and resist wear during torque sessions. Key attributes - Functionality: thin wall, deep reach, impact-appropriate sockets for lug nuts. - Compatibility: sized for common lug nuts in metric sizes; suitable for use with impact tools on vehicles and equipment that use 17, 19, or 21 mm lug nuts. - Size: 17 mm, 19 mm, 21 mm; 3-piece set. - Performance: designed to withstand torque typical of impact tool use and heavy-duty wheel service. - Brand alignment: matches the features implied by a 3-piece thin wall deep impact socket set for lug nuts in metric sizes. What's inside - 3 sockets: 17 mm, 19 mm, 21 mm. Use cases - Tire rotation and wheel replacement on passenger cars, SUVs, and light trucks where lug nuts require deep reach. - Wheel maintenance and brake service tasks in automotive shops or home garages that involve recessed lug nuts. - Service on equipment or vehicles that use 17, 19, or 21 mm lug nuts, where access around brakes and wheels is limited. Usage tips - Use with compatible impact tools to achieve efficient loosening and tightening of lug nuts. - Ensure proper seating on the lug nut before applying torque to prevent rounding. - Inspect sockets for wear after heavy use and as needed to maintain reliable performance.