65Mn Open Hook Tension Spring Wire Diameter 1.0mm with O hook extension spring Outer Diameter 5-12mm Extension Spring

High-concerned chemical：None isCustomized：Yes Model Number：1.0mm Load Type：Extension DIY Supplies：Electrical Material：STEEL Origin：Mainland China Certification：NONE

High-concerned chemical: None isCustomized: Yes Model Number: 1.0mm Load Type: Extension DIY Supplies: Electrical Material: STEEL Origin: Mainland China Certification: NONE