he all new Feedneck Knob Wheel is designed for tool-less adjustment to the upper feedneck lever on your DYE DLS, DS+ and CZR Markers. The anodized 6061 Aluminum wheel is oversized for comfort and on the fly adjustability. Stainless steel screw included. Compatible Markers: • MXR • DSR Pro • DSR+ • DLS • CZR+ • CZR