The Doepfer Modulation Wheel kit is a single wheel for DIY projects and as a replacement part for Doepfer keyboards. It contains a special 10k linear rotary potentiometer with nut and washer, the black plastic modulation wheel, a mounting angle, rubber buffer (for a soft touch of the wheel against the angle) and a fetch-back spring that can either be used (for pitch-bend) or not (for modulation or volume control). Available as a kit only and has to be assembled by you. Dimensions: overall: ~ 67 x 33 x 63 mm (mounting angle, wheel and potentiometer) only the mounting angle: ~ 53 x 20 x 40 mm (without wheel and potentiometer) diameter of the wheel: ~ 67 mm width of the wheel: ~ 10 mm distance of the mounting holes of the mounting angle: ~ 32 mm For more technical information, please visit the Doepfer website and have a look at the manual. The modulation wheel can be combined with the Doepfer Wheel Electronic, LMK2+, LMK4+ and MKE.