A Punching bag spring is ideal to attach between punching bag and its attachment, it make the punching bag better to hit by allowing it to taking some of the shock instead of your hand 

It also help the bag wear better by absorbing the shocks will be absorbed by the spring

This punching bag spring is suitable for all punching bags with a maximum weight of 50 kilograms.

The spring has a diameter of 4.5 cm and is 11 cm long, punching bags springs wont last forever and will have to be replaced over time.

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