rigor 11516 non-marring lug nut socket set | wheel protector impact socket set | 1/2" drive, 6 point, cr-mo | metric 17mm, 19

Durability: 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; Meet or exceed ANSI standard. | Multiple designs: Hollow core design for longer lug nut; Non-Marring Sleeve and Insert protect the rim and the top of lug nut. | Strong Sleeve: PP+TPR Sleeve is oil resistant, weathering resistant (-40 to 176 ?F), and more flexible than regular PT material to improve the 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.