TandN Products features the NASCAR-approved Saf to GO lug nut, which indicates when it is safely snug to the wheel. Designed for use with any hub using 5/8-18 conventional racing piloted wheel studs, Saf to GO offers safety technology to NASCAR and other racing series. When threaded onto a stud, a colored plastic ring on the end of the nut is shattered as the threaded portion of the stud pushes up on the ring. The contrasting color of the nut is exposed and indicates that it is safely torqued to the wheel and has two full threads exposed. This technology enables team members and inspection officials to determine quickly and with certainty that the nut has been safely tightened.