This is an assembly for a Jazz Bass. Since the typical 2-volume setup was difficult to use, I wired a 1-volume + balancer circuit using new parts. It was used for about 2-3 months. There are traces of soldering and desoldering, so I've marked it as "Slightly scratched or dirty." You should be able to use it immediately by soldering the two hot wires from the 2 pickups and the ground wires. The controls are volume, balancer, and tone. The tone uses a no-load pot that bypasses when fully open. Volume: Bourns Pro Audio B250kQ-Split Balancer: Bourns Pro Audio Blend-Balance Mini Pot 250kQ-Split Tone: Bourns Pro Audio No Load Pot B250kQ-Split Jack: PureTone PTT1 No plate or knobs are included. Nuts and washers are included. The volume and tone pots are inch size, and the balancer pot is a mini pot with metric size.