10 x Blue White 5K Ohm 502 Trimpot Trimmer Potentiometer Variable Resistor | eBay
Spectrol 70Y502/3059Y-1-502 Rectangular Cermet Trimmer Potentiometer, 20 Turn, 0.5 Watt, 5k Ohm, 1.25" L x 0.20" W x 0.33" H (Pack of 5): Amazon.com: Industrial & Scientific