1.Simple button operation, easy 360 degree rotation;It can be mounted on the rails or on the M6 hole of the hull. 2.Fixed base by hand without tool operation 3.Compatible with all a kayak tracks,Easily adjust position on Track 4.304 Track Screws & Track Nuts Hardware Gear,Package includes mounting accessories and tools for all rails 5.Made of UV stabilized fiberglass reinforced nylon