... produce high performance and reliability idlers used for heavy construction machinery,such as caterpillar,komatsu,hitachi,daewoo,kobelco,sumitomo,hyundai,samsung,volvo ... ,such as EX60,EX200,EX300,EX400 ZX serials,such as ZX200,ZX210,ZX220,ZX330,ZX350 FH serials,such as FH120,FH200 ... or email if you have any requirements. Front idler for excavator and bulldozer