Bourns Guitar & Amp Potentiometer, 250K Audio, Knurled Split Shaft Bourns Guitar and amplifier pots. These are drop in replacement components. Low torque, Carbon element 1/4" Knurled Split Shaft, 3/8" Bushing Width, 3/8" Bushing Length Tolerance: 20 %, Power Rating: 0.25 watt, Maximum Operating Voltage: 250 V Bourns Series Number: PDB241-GTR