Spring steel hook spring ,Wire Dia 4mm,Outer Dia 40/45/50mm,Length120-500mm,Suitable for courtyard doors, garage doors, etc.

High-concerned chemical：None isCustomized：Yes Model Number：WTBXLH241372 Load Type：Extension Style：Spiral DIY Supplies：Metalworking Material：STEEL Origin：Mainland China Spring：Spring Springs：Springs Stretch spring：Stretch spring Black spring：Black spring Oven spring：Oven spring garagedoors：garagedoors

High-concerned chemical: None isCustomized: Yes Model Number: WTBXLH241372 Load Type: Extension Style: Spiral DIY Supplies: Metalworking Material: STEEL Origin: Mainland China Spring: Spring Springs: Springs Stretch spring: Stretch spring Black spring: Black spring Oven spring: Oven spring garagedoors: garagedoors