Bourns Mini Guitar Potentiometer, 250K Audio, Knurled Split Shaft Bourns Mini Guitar pots. These are drop in replacement components. Carbon element 1/4" Knurled Split Shaft, 3/8" Bushing Width, 3/8" Bushing Length Tolerance: 20 %, Power Rating: 0.1 watt, Maximum Operating Voltage: 150 V Bourns Series Number: PDB181-GTR