Heavy Duty Extension And Tension Coil Spring Kit For DIY Projects And Repairs, Pull Back Style For Makers, 2.5mm Wire Diameter, 20mm Outer Diameter, Length 150 To 340mm, Rust Resistant 65Mn Spring Steel, One Piece

Extendable pull back spring kit, 340mm length
✔️ Wire dia 2.5mm, OD 20mm, length 150-340mm, 1pc

This tension/extension spring is designed for a wide range of household and workshop tasks, from repairs to experiments and development projects.

✅ Size: 2.5mm wire, 20mm outer diameter, 150-340mm length
✅ Material: Spring steel (65Mn), Untreated
✅ Quantity: 1 piece
✅ Type: Tension/Extension Spring for various applications

💡 What is a tension/extension spring used for in common mechanical projects?

This type of spring stores energy and provides return force in moving parts. - Used to pull components together or return them to rest in small machines - Works with 2.5 mm wire and 20 mm outer diameter for compact assemblies - Length range 150-340 mm supports various travel needs ✝️