Uxcell a13122300ux0148eu Wirewound Ceramic Potentiometer Variable Rheostat Resistor 200W 500ohm Product Name : Rheostat ; Material : Ceramic, Metal ; Color : As Picture Shown Power Rating : 200 W ; Resistance Value : 500  ; Mounted Hole Diameter : 9.5mm/ 0.37" Bottom Screw Diameter : 3mm/ 0.12" ; Bottom Base Diameter : 93mm/ 3.6"