At B&B Manufacturing, we offer a wide selection of precision engineered, quality roller chain sprockets serving the power transmission and precision mechanical component industries. Our A-style sprockets accommodate NO. 25 and NO. 35 pitch chain. Our B-style finished bore sprockets accommodate NO. 25 and NO. 35 pitch chain and feature two set screws, standard keyway, bores to 1-3/8 in. We also feature minimum plain bore (MPB) sprockets made from steel, stainless steel. Ideal for instances where space limits bushing use, our MPB sprockets feature a variety of pitches.