NRG Extended open ended lug nuts are forged from T6061 aluminum to be lightweight. They are avaialbe in various anodized colors. Utilizing an open end design they are compatible with vehicles that are using extended studs. With it's 60 degree taper these NRG lug nuts can be used with a majority of aftermarket wheels but should not be used with OEM wheels. Like all aluminum lug nuts please do not use an impact gun when removing or installing lug nuts. All aluminum lug nuts should be hand tightened and torqued to vehicle specifications.