The bridge on a jazzmaster is a controversial thing, some love it and some hate it. I, for one, like the original jazzmaster bridge. It doesnt captivate me however. When staytrem came out with their revised bridge based on the mustang, I was intrigued, however wait time of 12 weeks does not inspire me. Noticing a sale of these and have read the favorable reviews of the (revised) Marr bridge, I thought to give it a shot. I know mastery has fixed post design on lock, but if the rocking bridge is your thing, for the love of god get this. Its the final boss of offset bridges. Revised 52mm spacing, fixed 7.25" radius, nylon inserts to prevent the all-so-common bridge drift; whats not to love?Edit: I now notice these are sold out. Hopefully they don't get scalped like staytrems...