At the top of the Woody line sits the XL. It features our Stack® hum-canceling design together with six fully adjustable pole pieces for maximum flexibility in differing string gauges and neck radii. Like all the Woodys, the XL is housed in a beautiful chunk of hand-polished rock maple. The tone is clear and accurate, noise free, and impervious to feedback. Fits acoustic guitars with sound holes between 3.85" and 4.10" (98- 104mm).