Track Link Assy track chain assyModel No.excavator rollersMaterial40Mn2/50MnFinishSmoothColorsBlack or yellowTechniqueForging castingSurface HardnessHRC52-58Warranty time1900 hoursMOQ2 piecesFOB PriceFOB Xiamen USD 30-200/PieceCertificationISO9001 and SONCAPThere are more model of track link as follow for your reference:NameSpecificationPitchTrack linkR200 50L171Track linkPC120-5 42L175Track linkSK100 43L171Track linkDH55 40L135Track linkSH120 44L171Track linkPC60-5 42L135Track linkPC60-6 38L154Track linkD50 49L175Track linkR55 40L135Track linkPC200-5 45L190Track linkPC200-5 49L190Track linkHD700 48L190Track linkPC400-2 47L216Track linkPC300-6 45L216Track linkCATE320 45L190Track linkCATE320 46L190Track linkEX300-1 47L203Track linkEX200-1 48L175Track linkEX60 37L154Track linkEX100 43L171Track linkEX200-5 46L190CodeHoleLinkP/WModel20T-32-0014012.538130PC40-7 PC45-1201-32-00131,10G-32-0011112.542169PC60-3/5   D2012.542140YC85   XCG889068163;909617014.337178EX60 EX60-2/3201-32-0030014.338170PC60-6/7 PC75UU11G-A70-001314.341268D31P   SD08202-32-0011443281PC100-2202-32-00131,11G-A74-001246300PC100U-2 PC100(120)-3 D31PLL6Y171114.736198D3C24100J116939F116.441295SK100 SK100-3/5   SK11024100J12245F543310SK120-2/3 SK130907036916.445450EX150-1907145247470EX100M EX150LC-1C24500200;093-191916.439310MS110 E110   K904B9K912940318D4D099-5398;4I7479;9092929;909194841326E110B 311 EX100-1/2/3/5 S40 LS2600 K904NⅡ YC135099-0648;4I7480;1469I75;9109195143342E120 E120B 312B 312 EX120-1 SH100 HD450 HD500 HD550 K904B-LC932015;9092932;9138747;KNA03944350E140 SH120 LS2650 EX120-2/3/5 EX130H-5C3450120145358MS110L EL120B2S757916.440425D6B 951T90.34.00016.439425T100 T901082-0006050545R200 R210 SE21083E1-2502;1082-0010054588R200LC R210LC R210LC-2 SE210LC202-32-0020116.440268PC100-5/6 PC120-5203-32-0010142282PC120LC-5 PC120-6 PC130