This product was originally designed and invented by Outslayer in 2016. Properly installing your heavy bag is important to ensure you get the most out of your bag workouts and the longest life out of your equipment. The Outslayer Heavy Bag Hardware Saver Kit is the all-in-one solution to reduce wear and tear on your bag, straps, mount and mounting surface. Included in the kit are 2 heavy duty quick-links, a 700lb weight capacity heavy duty galvanized swivel, a 350lb weight capacity heavy duty spring, 2 zinc plated spring links. Measuring 18" when fully extended, the kit can be shortened or modified by removing the swivel or carabiners as needed to create a solution that works best for your bag and mount. The Outslayer Heavy Bag Spring is designed specifically for heavy bags and cushions bag movement to provide consistent performance. High density screw lock carabiners and quick links make it easy to connect and disconnect your bag while acting as a buffer for your bags straps and hardware. Get the Outslayer Punching Bag Hardware Saver Kit and maximize your heavy bags performance for years to come!