- Hold punching bags as heavy as 300 pounds, all steel construction
- Both ends are closed, more safe, don't worry about popping out
- The spring helps absorbs the vibrations so the bag hanger doesn't shake with each hit
- This is a HEAVY duty spring, recommend for 100-300lbs bag, there will have no stretch if the bag is two light
- It can be installed from the top mount or from top of the heavy bag and bottom part of the chain
