This came in a Ray34CA(a 2-band bass) that I purchased on TalkBass, so one of the pots is missing a washer and hex nut. It's missing the battery clip. I believe the model number to be STC-3M4. It did work well when I had it in(with one pot inside the cavity :scowl, but I chose to go with a 2-band pre. It was professionally removed by Moe at Nordstrand guitars. It comes with everything you see in the picture. $60 shipped PayPal/Amazon Payments.