Description: High quality and testing is fine Bass wiring harness, 250K,1V1T, fit for precision bass parts About the Potentiometer: 24mm Base This harness is completely prewired All you need to do is solder your pickups to the switch and ground them to the volume pot Size Chart: Dia: Approx. 24mm/0.94inch Package Includes: 1x Bass Wiring Harness Prewired Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size