Alston track locators have a unique "bolt on" feature. A special threaded clevis, replaces the nut on the bolt that attaches the ladder bar to the rear end and chassis. Left and right hand threaded heim joints allow you to make precise bar adjustments, without the need to remove the locator from the car. The extra smooth operation eliminates any bind from the system while keeping the rear end square in the chassis. Made from 7/8 O.D. X 36", 4130 chromemoly tubing and heavy duty clevis.