Info from Manufacturer: This is the pickup that started it all for us. The LB6, with its great presence and warmth, continues to be the pickup of choice for professional musicians like James Taylor, Vince Gill and Phil Keaggy. Six individual vibration sensors are cast right into the pickup base and epoxy bonded to the micarta saddle to insure optimum sound transfer. And its built-in feedback canceling design makes it ideal for high-SPL performance situations. FEATURES: One piece pickup and saddle for superior sensitivity Sensor design cancels feedback and body noise for unsurpassed feedback resistance, yet maintains natural acoustic presence and warmth at higher volumes Strong output signal allows the LB6 to be plugged directly into most amps and effects without the need of a preamp Durable, high-quality saddle material can be shaped for ideal intonation Guaranteed quality: each pickup is performance-tested in a guitar fixture to ensure consistent quality and performance Options: LB6? (STEEL STRING SPACING) Steel String Spacing: 2 1/8? E to E | Saddle Length: 2 7/8? | Saddle Width: 1/8? LB6X? (WIDER STRING SPACING) Fingerstyle Spacing: 2 1/4? E to E | Saddle Length: 2 7/8? | Saddle Width: 1/8? LB12? (FOR 12 STRING GUITARS) 12 String Spacing: 2 3/8? E to E | Saddle Length: 2 7/8? | Saddle Width: 1/8?