Brand: Philmore LKG. MPN: PC275. Standard Potentiometer. POTENTIOMETER / Standard. Product Specifications: resistance value: 500K, taper: linear, has switch, terminal style: combo, maximum voltage: 500V AC, power rating: 500mA, .5W, switch rating: 1.0A @ 12V DC or 125V AC, bushing diameter: 8mm, shaft: 30mm w/flat 12mm.