PT ALVA PRIMA GLODOG EMAIL : alvaprima@cbn.net.id bengkel bubut RS Sprocket & gear RS Sprockets are optimal for G8 Series RS Roller Chain. These sprockets are for RS Roller Chain (JIS/ISO standards compliant). Tsubaki offers a line-up that includes hardened teeth types, SD types for use with two strands of single-strand chain, Fit Bore Series with shaft bore diameter and keyway finished and set screws provided, Lock Series with tightening device, and Tough Tooth sprockets optimized for use with Heavy Duty Chain. Type A, B, C, SD (two single strands), FB Series (with finished bores), Lock Series (S/N), Tough Tooth