Extended Pitch Sprockets EXTENDED PITCH TAPER-LOCK ® - SMALL ROLL: Machine cut, Taper-Lock ® bushed steel sprockets for small roll series extended pitch chains – No. 2040 through No. 2080. EXTENDED PITCH TYPE A SMALL ROLL: Machine cut, Type A steel plate sprockets for small roll series extended pitch chains – No. 2040 through No. 2120. EXTENDED PITCH TYPE B SMALL ROLL: Machine cut Type B steel sprockets for small roll series extended pitch chains – No. 2040 through No. 2120. EXTENDED PITCH TYPW A LARGE ROLL: Machine cut, Type A steel plate sprockets for large roll series extended pitch chains – No. 2042 through No. 2122. EXTENDED PITCH TYPE B LARGE ROLL: Machine cut, Type B steel sprockets for large roll series extended pitch chains – No. 2042 through No. 2122. More Taper-Lock® Products Standard Roller Chain Sprockets products/services | gear making | overview | faq | site map | contact | home