12B-3 roller chain sprockets are manufactured for metric 12B-3 roller chain and are manufactured in accordance with ISO, DIN, and BS228/3 standards. Our sprockets are precision manufactured from high-quality steel, directly interchange with other manufactures, and are engineered for superb performance and durability. Common styles of these sprockets include B-Hub, C-Hub, and taper bushed type but others are available upon request. The below charts show our standard sizes for 12B-3 sprockets, if you don't see the exact sprocket you need we also custom manufacture sprockets. To get a quote on 12B-3 sprockets or for more information please contact us and we will be happy to assist you.