... harden 3. competitive price 4. trend to long cooperation Motorcycle Chain1)Model numbers:219H,35R,270H,420,428,428H,428HF1 ... carbon steel,nickel-plated,zinc plated,copper platedSPECIFICATION: PACKING: Motorcycle drive Chain Verified Information This information is Verified by ... Acceptable Chain running machine bafang 4 8.0 Acceptable Bush rolling machine MT1000A 40 8.0 Acceptable Testing Machinery: ...