This Radz Universal Joint Knuckle enables you to attach a windsurf rig to either your inflatable windSUP or hard paddleboard that has a windsurfing mount fitted.
When choosing a Universal Joint or 'Knuckle' it is critical that you choose the correct universal joint when connecting your windsurf rig to the paddleboard. There are three common types of Universal Joint – the Rubber, the Tendon and the Knuckle joint. While all three of these work equally as well as each other, many manufacturers recommend you use the Knuckle joint when attaching your windsurf rig to the a paddleboard, particularly inflatable SUP's. This is due to a Knuckle Joint's ability to hinge completely allowing a windsurf sail to be attached whilst its flat on the water as well as when it is at rest. This means there is much less pressure through the paddleboard and it's point of attachment when dropping the rig on the water.
This Radz Knuckle Joint will fit the female thread on almost every paddleboard produced as the fitting as long been standard in the windsurfing industry. Should you have any questions you like any clarification, then please drop us a line.
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