Check the listing for details. 8x Drive in Wheel Studs, 9/16"- 18 Dia, 2.5" Long, 0.69 spline Dia. Condition: New. Listed at 42.99 USD. 8x Drive in Wheel Studs, 9/16"- 18 Diameter 9/16"-18 Diameter2.5" Long0.69" Spline Diameter0.31" Spline0.81" BaseSet of 8 (EIGHT) About Us We are a Family company and have been in business over 20 years, and currently stock over 200 trailers of all types, with a full Service Department and Parts Inventory with a 10,000 sq ft Warehouse. We stock AND INSTALL what we sell! We can Answer your Questions! We do get busy at times, but you can count on is warm friendly customer service, and a honest, personal approach to doing business. Look at our feedback, and rest assured you are dealing with a solid, knowledgeable company! Our Location: R and P Carriages 270 E Jackson Street Seneca, IL 61360 Our Hours are 9:00AM to 5:00PM, Central Standard Time, Monday through Friday, and 9:00AM-3:00PM Saturday We offer a full satisfaction guarantee and reasonable, so give us a chance! We allow returns, refunds or exchanges, so purchase with confidence! To directly contact us, you can email us (our hours are 9-5 M-F so give us a chance to respond)