Universal Adaptor For Lockrack Bases These arms are great for

These arms are great for Kayaks and carrying two SUP's

Heavy Duty Mount for Heavy Duty Roof Racks

Fits the Rhino Rack HD and Prorack HD as well as others

8 Adaptors supplied for Universal X

Universal Adaptor For Lockrack Bases These arms are great forIf your vehicle does not have factory roof racks with an accessory groove on the top or aftermarket racks like Thule, Yakima or factory crossbars, you will need these universal bar adapters to properly attach the racks. 4 x Universal Adapters for round, square and factory crossbars. For Surf Board Racks 1 Set is Required. For Universal X, SUP X and Surfski X Units 2 Sets are Required.