DiMarzio GW2101 Les Paul Wiring Harness With Toggle SwitchThe heart of this drop in prewired Les Paul harness is the custom designed 500K long shaft pot. First introduced over 45 years ago, DiMarzio used a 10 step rotary switch to create a taper that works with DiMarzio's high impedance pickups. It's neither a linear nor audio taper pot it's DiMarzio's custom taper. To further increase reliability, the center shaft and threaded parts are made from solid machined brass instead of cheap castings.