These Hosco Humbucker Pickup Covers are made from nickel silver to preserve the voice of your pickup without dampening the high end. The pickup covers come in three choices of pole piece spacing to suit your humbucker: 49.2 mm (1.94" or 1 15/16"), 50 mm (1.97") and 52 mm (2.05").

• The 49.2 mm (9.84 mm pole to pole) suits vintage style Gibson Les Paul pickups (neck and bridge), standard Seymour Duncan pickups (not trembuckers), standard Bare Knuckle Pickups (not Boot Camp), Epiphone neck pickups
• The 50 mm (10 mm pole to pole) suits Bare Knuckle Pickups Boot Camp standard spaced pickups and other modern metric standard spaced pickups
• The 52 mm (10.4 mm pole to pole) suits Epiphone bridge pickups, EMG Retroactive F Spaced pickups, Bare Knuckle Pickups Boot Camp F Spaced pickups and other modern metric F spaced pickups

Due to the tight fitting nature of humbucker covers these are simply examples of pole piece spacings that should fit the covers, we cannot guarantee the fit of any pickups as the final dimension of individual pickups can vary with the amount of tape wraps or lead wire placement etc. causing the pickup to not fit the cover.