Promountings Custom Double Loop Spring is great for abosrbing impact on even the hardest punches. Combine this with one of our punching bag hangers for the best result in reduce noise and vibration!
-1.5" OD
-6.625" overall length
-Machine style double loops with 1.5 coils
-Inline hold
-Plain finish
-Max Load 250lbs.
-Made in the USA