Extension Compression Springs Kit With 1.2mm Wire Diameter And 12mm Outer Diameter, Adjustable 35mm Through 300mm Length, Steel Hook Springs For Assembly, Repairs, Prototyping And Research And Development Projects

High Quality Steel Extension Spring 1.2mm Wire 12mm OD 300mm Length
✔️ Extension tension spring made from durable steel wire 1.2 mm thick with 12 mm outer diameter

This single extension spring works in machines, repairs, and custom builds where reliable tension is needed.

✅ Spring steel wire diameter measures 1.2 mm for consistent pull strength
✅ Outer diameter of 12 mm fits standard mounting points
✅ Overall length reaches 300 mm to handle extended travel applications

💡 What is an extension spring used for in machinery? Extension springs deliver controlled pulling force across many setups. - They stretch to return parts to starting position in equipment - Steel construction resists rust during repeated cycles - Common in garage doors, fitness gear, and industrial fixtures - Easy install allows quick swaps during maintenance work

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