... for supporting oem parts including track roller,top roller,idler,sprocket,segments,track link,track link assy,tensional assembly:Komatsu:D20 ... /6/7,PC400,PC400-3/5/6,PC650Caterpillar: D4, D4D ,D5,D6D,D6c,D7f,D7G,D8K,E70B,110B,120B, 180,200B ... ,320LC,335,450Kubota:U-35-3, U-50-3Liebherr:R912 sprocket for hitachi sh200