This heavy bag mount includes a exclusive the spring Heavy Hanging System. In the 360 degree Boxing has engineered an improvement to the traditional spring and swivel. Incorporated into its 1ft length is a durable high quality spring and needle bearing swivel. This combination minimizes the noise, jarring and vibration to your home and heavy bag normally caused when working out on your heavy bag. The design decreases excessive bouncing that can cause damaging stress to both the bag and the hardware. Hold up to 80 KG. Hang your heavy bag with confidence and makes the most durable and secure heavy bag mounts on the market.