Jazz Bass pre-wired controls. Series/parallel pickups wiring switch on first potentiometer via Push/Pull. Up-series, Down-parallel (classic JB setting). It fits Fender JB (US/Mexico) control plates or similar (3/8" holes for potentiometers needed). It's made of CTS 250K audio taper potentiometers (1/4" solid shaft), CTS 250K push-pull potentiometer (split shaft), premium Russian military K40Y-9v capacitor .033uF/200V (more midrangey sounding when rolled off), PureTone jack and Gavitt vintage wires. There are lead wires to pickups and bridge for easier installation. I'll include some heat shrink tubing and wiring info. Price includes US shipping PayPal