Universal Adaptor For Lockrack Keys These arms are great for

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

For Surf Board Racks - 1 Set is Required

Arms are interchangeable between all of our bases

If you require a new base for your vehicle or are looking to add a set of bases to another vehicle

square and factory crossbars

Universal Adaptor For Lockrack Keys 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.