The price of the main unit has doubled, but I'm selling it at a reduced price. This is a genuine product that comes with SLP WORKS products' knobs. It's very convenient to have for removing handle knobs, replacing bearings, and performing maintenance such as cleaning. *The knob is for photography purposes only; only the screwdriver is for sale. This is a genuine Daiwa tool specifically designed to remove Daiwa's special handle knob caps, such as those found on RCS Power Light Knobs and Eging Caps. *Using tools that don't fit the holes, such as pliers, can scratch the surface when removing the cap. (Compatible Knobs) Millionaire CV-Z103, RYOGA BJ-W Koga, Emeraldas Eging Wood Knob, Power Light S Knob included with Saltiga BJ, Caldia SW, Blast LT, Vadel, etc., Power Light M Knob, Power Light L Knob, etc. WORKS