1Pcs Expansion Spring 4mm Wire Dia Tension Extension Expanding Extending Springs Out Dia 22mm~35mm Length 80mm~300mm

High-concerned chemical：None isCustomized：Yes Model Number：Expansion Spring Load Type：Extension DIY Supplies：Electrical Material：STEEL Origin：Mainland China Certification：NONE Use：Industrial

High-concerned chemical: None isCustomized: Yes Model Number: Expansion Spring Load Type: Extension DIY Supplies: Electrical Material: STEEL Origin: Mainland China Certification: NONE Use: Industrial