ALKO Jockey Wheel Adjustable Swivel Clamp Clearance Experience the ultimate solution for Experience the ultimate solution for your caravan with the Milenco Dust Reduction Antenna – the first ever 2 in 1 product that combines a Caravan Dust Reduction System and a high quality TV antenna Output: Variable up to 4 Another great feature of the AL KO Adjustable Swivel Jockey Wheel Clamp is since the clamp takes a very standard 48 mm OD jockey wheel tube you can use this with any sized jockey wheel or even jockey stand you want The AL KO Adjustable Swivel Jockey Wheel Clamp is just the thing to have as now you can clamp on your jockey wheel with the simplicity of a bolt clasp and then it’s just a matter of U bolting the entire system to you’re a frame leaving you with the convenience of being able to deploy or stow your jockey wheel away in seconds