Product Name: Wirewound Ceramic Potentiometer Resistance Value: 5R ohm Power:100W Tolerance: +/-5% Terminals Number: 3 Features: Round Shaft Total Size: 80.6 x 67mm/ 3.17 x 2.63 inch (D * H) Screw Thread Dia.: 10mm/0.39 inch Shaft Diameter: 6mm/0.23 inch Shaft Length(do not include the Screw Thread parts):14.7mm/0.58 inch Shaft Total Length:30mm/1.18 inch Package Content:1 x Wirewound Ceramic Potentiometer Knobs Size: 18.8 x 30/ 0.74 x 1.18 inch (H*D) 5R ohm, 3 Terminals, Single Linear, Suits Most Standard Knobs.(this item include Knobs) Material:Ceramic Metal Control the electrical resistance of a circuit without interrupting the flow of current. The rheostat is consisted of ceramic core and a resistive wire wrapped to form a toroid coil with a wiper axle. Can be used widely as light dimmers and motor speed control, is applicable for arc lamps, pumps, fans and blowers, , model trains or other applications that require high voltage and current. Knurled shaft with split design for push-on knob.