Be aware that there are another versions of the 3249B with 3- leg locks and a narrow flange on the top where the camera connects. See It Here. If you have a 2- leg lock version then check here to see if it is a 3016. The parts are NOT interchangeable.
Single Spiral and DOuble Spiral Flip levers and clamps are listed, though the parts list only shows the Double Spiral items. There may be versions of these Monopods that use the Single Spiral Flippers - so check your clamp flip levers aresfully when ordering these parts.