The popular GFS Thin Jazz Archtop pickups are BACK! Wound firm and full with classic 7.8K output- the Thin Jazz uses an Alnico V magnet and Heavy Formvar wire to create the smooth, rich, elegant jazz tones Archtop players crave. The German Silver cover is nicely chrome plated. The brass attaching wings are spaced at 2 3/16" but since it's real brass and not Pot metal- the tabs are easily bent to accommodate wider or narrower neck heel widths. You attach the pickup with four screws (included). This is a four-wire humbucker and may be coil split for single coil sounds- We ship each GFS Thin Jazz Pickup in the full retail packaging with illustrated instructions and mounting screws.