Check the listing for details. MARTIN ROLLER CHAIN SPROCKET 50BS28X1 (EC11-3). Condition: New – Open box. Listed at 35.15 USD. MARTIN ROLLER CHAIN SPROCKET 50BS28X1 SpecificationsNumber of Teeth28Bore1"Hub Diameter3"O.D.5 7/8"Bore Length1.25 inchWeight---------MaterialSteelSprocket StyleNumberSingleHub StyleType B (Hub One Side)Shaft Mounting(2) Set Screws; KeywayNew: no boxCheck out my other items!FW EC11-3You are purchasing this product from Whites Hot Deals. We handle factory and retail closeouts, overstock, salvage, lost freight and store returns. USED items are sold as USED and indicated in listing. All items are sold "AS IS" No warranty or liability is expressed or implied. Please feel free to contact us with any questions. Free Shipping USA only, excludes Alaska, Hawaii. All items are shipped within 1 business day of payment with the most cost effective shipping carrier. We’ve been in business for over 10 years and pride ourselves on providing good customer service. We want you to be happy with your purchase, so if you are not satisfied with it for whatever reason, please contact us by email and allow us an opportunity to resolve your concern. We respond to all messages as quickly as possible. Thank you for shopping at Whites Hot Deals.