Drive roller chain 50-3 Driving roller chain of increased accuracy and reliability ID140-3 Drive roller chain 160-3 Drive roller chain of high strength and accuracy 3NP-50,8 Drive roller chain 180-3 Drive roller chain 140-3 Drive roller chain of increased accuracy and reliability ID140R-3 Drive roller chain of high strength and accuracy 3NP-44,45 Drive roller chain 40-3