The Presentation True Rotary 4000 Vise is perfect if your tying needs require a variety of hook styles and sizes. Its versatility is unmatched. The Presentation 4000 True Rotary Vise has two rotary tension adjustments. You can use one adjustment to preset a desired level of tension for your basic tying needs. The second adjustment is used for adding tension or holding the rotary shaft in a particular desired position. Right Hand.