Komatsu bulldozer track chain D20 1.Material:40Mn2 2.HRC56-58,depth:6-10mm 3.Warranty:2000 hours 4.Factory,smooth finish 1.Product information BrandQYMaterial40Mn2,40CrColorBlack,YellowTechnologyForging CastingSurface Hardness HRC56-58,Depth:6-10mmGuarantee2000 hoursFOB PriceFOB Xiamen USD /PCMOQ2PCSPackingStandard exported wooden pallet or negotiationDelivery15-20 days or less after order ...