RoHS: no. Component family: Potentiometer knob. Manufacturer's product group: FP. Potentiometer accessory type: rotary knob, with base. Outer length [mm]: 27mm. Outer width [mm]: 27mm. Outside diameter [mm]: 27mm. External height [mm]: 20.5mm. Number of turns: continuous. Registration: direction arrow. Color: black. Material: plastic