Product Name: RheostatControl the electrical resistance in a circuit without interrupting the current flow. The rheostat consists of a ceramic core and a resistive wire wound to form a toroidal coil with a wiper axis. Can be widely used as light dimmers and motor speed control, is applicable for arcs, pumps, fans and blowers, respirators, dental and model railways or other applications that require high voltage and current.Material: Ceramic, MetalColor: As shownPower Consumption: 100 WResistance Value: 100 OhmMounted Hole Dia: 9.5 mm / 0.37 \"Bottom Screw Diameter: 2.5 mm / 0.1 \"Bottom Base Diameter: 72 mm / 2.8 \"Shaft Size: 37 x 6 mm / 1.5 \" x 0.24 \" (L * D)Body Size: 80 x 36 mm / 1.3 \" x 1.4 \" (Max.D *)Net Weight: 250 gPackage Content: 1 x RheostatNote: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.