guide wheel 1.Material:NO.45 steel 2.Usage:excavator parts Excavator Sprocket & Segment SH200 SprocketSprocket & Segment models: KOMATSUPC400-6,7,PC360-7,PC300-5/6/7,PC300-1/2/3,PC220,PC200-5/6/7,PC200-3,PC200-1/2,PC120,PC100-6,PC100-5,PC100-1/2/3,PC75,PC60-7,PC60-5/6,PC50,PC45,PC40-7,PC30,PC20CATERPILLARE450,E330C,E325,E322,E320C,E320,E312,E311,E307,E300L,E300B,E240,E200B,E120B,E70BHITACHIEX400- ...