Sockets are made of Chrome, Molybdenum steel with an easy to read, Phosphate Manganese surface finish. Laser etched socket description won't rub off. Lifetime warranty.

CP Thin Wall Mag Wheel Impact 1/2" Dr 3pc Socket Set Features:

• Plastic coating on outside of socket wall to prevent damage to rims
• Plastic cap on inside of socket to protect lug nut for damage
• Different color socket for each size for easy determination
• 3 most common metric sockets used on passenger cars
• Case hardening sockets for longer life
• Includes sizes 17mm, 19mm and 21mm sockets.