One WJBL-200 Wilkinson Cloverleaf Bass Tuner for 70s Fender P/Jazz Bass

I’m a drummer, not a bass player or guitarist. I acquired this mixed in with a lot of spare parts from a music store that went out of business a few years back. It looks unused. The knob turns and things look like it works but Im not familiar with it. I believe it is simply a chrome finish. It may be only for Left hand!?!? Please ask questions before buying. No returns. Please refer to the pictures which are considered a part of the description.

Here’s a description I found online that appears to match this part:

Wilkinson vintage style cloverleaf bass tuners for 70s Fender and similar models. Mounting hole spacing is 1-5/16" across the top, 1" across the bottom, and 1-7/16" top to bottom(on center). Reversible for right or left hand use. Includes bushings and mounting screws. These do not fit most Squier and import bass models as they have the 70s large backplate. Please check the peghead hole diameter and mounting screw spacing listed above before ordering.