DRT Varial single power handle for giant swim baits. Knob is single flat DRT knob. You may change the radius of the handle by changing the direction of the center components from 70mm to75mm (diameters from 140mm to 150mm) to suite the best for your heavy swim baits. Counter balancer is adjustable for distance to match. DRT Handle center nut is not included, and please purchase at least one or you may not fit the handle to reels. Comes with washers and the wrench for the center nut. The wrench cover with DRT logo on the photo is not included to this kit, or it is not sold separately.