Dorman 610-561 Serrated Wheel Stud - 1/2-20, Pack of 10 Dorman's Wheel Studs are produced to strict engineering quality standards Direct replacement for a proper fit every time Corrosion resistant Package Quantity: 10; 1/2-20 - .550 In. Knurl, 2.2 In. Length OE Number: 8A8Z1107A