Feature(may vary by option.)

●Size Length: 50cm/20inch; Outer Diameter: 8mm/0.3inch
●Made of zinc plated steel material, our machine extension spring is more long lasting and high hardness
●This tension spring can be used in many occasions, not only can be used to hang a small curtain on a storm door or screen door, but also can be used to hang a tool for easily operate
●Finished: Polished; Type: Dual hook; High elasticity
●Package Included: 2PCS Tension Spring

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Description

You can install the extension spring on your curtain door or screen door. And the spring will automatically retract back to its normal position.
Specifications:
Product Name: Machine Tension Spring
Features: Dual hook
Length: 50cm/20inch
Outer Diameter: 8mm/0.3inch
Material: Zinc Plated Steel

Package Included:
2 x Tension Spring