Here's a pickup I made for my double bass. It's the type that you insert into the gap next to the bridge. I think it's designed to provide a soft, expansive low end and a good sense of volume. In many cases, you'll need to shave down the gap in the bridge for installation, but depending on the bridge, it might fit as is, allowing for installation without any modifications. Please secure it to the tailpiece using the included cable ties, etc. It's new, having only been tested, but it has a handmade feel. Thank you.