K&K Double Big Twin Transducer Pickup. You can get the details and specs on this unit here:
http://www.gollihurmusic.com/product...fm?ProdID=1426
I had this unit installed on my bass for a short while before switching to a Fishman Full Circle. When I removed the pickup one of the tabs broke off but I was able to re-attach it. However, since there is a possibility that one tab might not work, I'm selling this unit at a great discount. If that tab doesn't work, you can replace it by getting the Big Shot pickup ($39) and soldering it on. Bob Gollihur said it's the same thing and could be used as a replacement. Here's the link to it:
http://www.gollihurmusic.com/product...ER_PICKUP.html
The pickups will come in it's original case with instructions and I have several strips of the sticky stuff still available for attaching it to you bridge. These units go for $102 brand new. Since one of the tabs might need replaced, I'm asking $25 shipped. If you do end up needing to replace this one tab, you would still be saving $30 versus a new unit. Paypal is accepted. No trades.