... ,BS,ANSI;Type of Sprocket:Roller chain;Style of Sprocket:Standard or Nonstandard;Size & Structure of Sprocket:Big sprocket,Small sprocket;Single line,Double lines ... optional;Application Fields of Sprocket :general machines,motorcycles,bikes,industrial fields,others;Typical Products of Sprocket:machine sprocket,motorcycle sprocket,bike sprocket,inert sprocket,Idler sprocekt;