This the wonderful WVS130-2P bridge from Wilkinson featuring the Locking Saddles. Check Wilkinson's website for more details.

This is the standard version featuring the 42mm Billet Steel block, not to be confused with Compact version which has a shallower block.

I have used this on a Partscaster for a couple years and it is a fantastic tremolo with unmatched tuning stability. It's not been abused as I don't use the arm that much. When I took the bridge off I noticed there were a few minor burrs on the knife edges and some of the chrome plating had worn off, not deep, just enough to see the copper layer that is under the chrome finish. I've very carefully gone over the burrs with 1000 grit sand paper and 3-in-1 oil to make them smooth, the knife edges are still sharp (I've tried to show this in the pictures). Tuning stability has always been excellent the whole time I've used this bridge even with heavy bar use. 

I'm selling as I've changed to a Gotoh 510 as I prefer the feel of a non locking bridge. 

Comes with all original parts, bridge assembly with locking saddles, the vibrato arm, body posts and bushings/inserts, the spring claw, springs, mounting/claw screws, and Allen wrenches. as well as original box & sticker. The bushings & inserts are unused/brand new as I've had this mounted on Gotoh bushings and inserts. There is still some solder residue on the Spring Claw.