Product description: Material:50Mn Tech:forging casting Hardness:48-52HRC Surface:smooth Color:yellow Guaranty:12 month Undercarriage parts model: Sprocket PC60-5 PC100-5 PC200-3 PC200-5 PC300 ZX70 EX100 EX200-1 EX200-2 EX200-3 EX300-3 EX300-5 E70B265 E120325 E110 E200B E320 SK100 SK200 SK230/21/26 DH220/21/22 DH220/21/30 DH280/21/16 SH120 SH200 SH300/435 SH300/450 SH280/23/22 R60 R130 EC290 YC85 EX300-1 DH55 R220/21/30 ZX200 SK320/21/26 R220/23/30 D6D D60 Track roller PC60-5 PC60-7 PC100-5 PC200-5A PC200-5B PC300-5 PC400-5 EX55 EX60-2 EX100 EX200-1A EX200-1B EX200-2A EX200-2B EX300-5 EX400-5 E70B E120 E200BA E200BB E325 E330 SK60 SK100 SK200A SK200B SK230 SK350 DH55 DH220A DH220B DH400 SH60 SH120 SH200A SH200B SH220 SH280 R200A R200B R290 EC210 EC290 YC85 HD770 PC40-7 CAT55 YM55 SWE70 D31 D4D D50 D60 D6D D85 Carrier roller PC60-56 PC60-7 PC100-5 PC200-5 PC200-7 PC300-5 PC300-7 EX100 EX200-1 EX200-2 EX300-5 ZAX200 E70B E120 E200B E330 SK60 SK100 SK200 SK230 DH55 DH280-5 SH60 SH120 SH200 R200 R225-7 EC290 HD770 D50 D20 D65 PC40-7 DH220-5 Front idler PC60-5 PC100-5 PC200-5 PC200-7 PC300-5 EX10065 EX10070 EX200 ZX240 EX300-1 EX300-5 E70B E120 E200B E325 E330 SK120 SK200 SK350 DH55 DH220 DH258 DH300 DH400 R130 R200 R225-7 R290 SH120 SH200 SH300/90 SH300/105 EC210 EC290 track link E70B E200B E320B CAT325 CAT330 HD700 R60-5 R60-5 R130 R130 R200 EX30-1/2 EX40-5 EX40-5 EX60-1 EX60-1 EX60-1 EX100-1 EX100-1 EX100-1 EX200-1 EX200-1 EX300-1 EX300-1 PC20 PC30 PC40 PC50 PC60 PC100 PC200 PC300 SK100 SK200