This pack of 12 official Fender Standard Series Bass Bridge Saddle Height Screws have 6-32 imperial thread used on American Special and Standard series basses (they will not fit their HiMass bridge which uses 4-40 screws). These will also fit Fender three saddle ashtray Telecaster bridges with the two string per barrel saddle style saddles as these most often use this larger 6-32 imperial thread. They are nickel plated and are all 7/16" long (11.1 mm or 0.44").