Seymour Duncan Triple Shot humbucker pickup ring. Short height with curved bottom for Neck position on most arch top guitars. The stealth pickup switching device allows you to access series, parallel and split wirings. Easy to install, just solder your guitar pickup leads to a small color-coded circuit board. Push the two switches towards each other for standard series wiring; away from each other for parallel wiring; and both towards one coil (either one) to shut that coil off. Works with most 4-conductor humbuckers.