Seymour Duncan Nickel Cover for Trembucker Pickups (11800-21-Nc) Nickel Cover for Seymour Duncan Pickups Standard String Spacing (2.00 inches E to E at bridge) Does not fit Trembucker Floyd Rose Bridge Pickups.Fits Most Humbucker Neck Pickups Nickel Cover for most F-Spaced Seymour Duncan Trembucker Pickups