Part # 8081 5/8" - 11 x 2.5"(Quick Start end) .685" knurl, Grade 8 Circle Track Course Wheel Stud.Set of 10 Studs5/8"-11 x 2 1/2", Quick Start end, .685" knurl, Moser Engineering 8081SKU: 8081$48.00PriceQuantityAdd to Cart