Garelick Millennium Series Swivel Seat Top Mount Low profile design allows 360 of rotation; 360 rotation is regulated by dual locking devices - lift the positive lock lever to rotate. Drop the lever to lock in place in 10 increments. Secondary twist control offers variable drag adjustment and can be tightened down to lock in place.; Internal Delrin Bearing Cup provides smooth, gaul-free operation; Plain or powder coated finish; Powder Coat Finish; Installation & Operating Instructions