1.Front idler for KOMATSU PC60-5/6/7 2.Abrasion resistance ... assembly, track shoes, track-roller, track-roller assembly, track roller bolt, front track roller frame, double flange track roller and etc2.Abrasion ... quality management.TRACK SHOES:PHOTOS ABOUT PRODUCTION AND COMPANY:4 Front idler assembly for KOMATSU PC60-5/6/7