RIGOR 11516 Strength Non-Marring Impact Lug Nut Socket Set, 4 PCS|Thin Wall, Deep, Wheel Protector|1/2" Drive, 6 Point, Metric, 17mm, 19mm, 21mm, 22mm, CR-MO|Carrying Case

Durability: Thin wall impact socket constructed from high quality Chromium-molybdenum (Cr-Mo) steel with precision forging and heat treatment which makes the socket durable and long-lasting. Long-Life Time: Over 2500+ life cycles before failure based on a 390 ft/lb Torque Test, and up to 3x longer life than regular thin wall impact socket; Meet or exceed ANSI standard. Multiple designs: Thin wall socket with the protective sleeve for accessing in confined space; Hollow core design for using on long lug nut; Non-Marring Core to protect lug nut. Strong Sleeve: PP+TPR Sleeve (0.7mm wall thickness) prevents damage on the rims and lug nuts, features resistant, weathering resistant (-40 to 176 ˚F ), and more flexible than regular PT material to avoid broken issue. Easily Identify and Store: Color coded and Laser etched for easy identification; Plastic blow-molded carrying case for simple storage and quick organization. Made in Taiwan., Manufacturer: RIGOR TOOLS