QSA 1" / 2" Adjustable Rear Lowering Drop Shackles (w/OEM Style No-Squeak Bushings) Compatible with Ford F-100 Pickups (excludes Flex-o-Matic models) Includes 1 set of 1" / 2" Adjustable Lowering Shackles (L+R) Shackles come with Ultra High Quality (OEM Style) Rubber Encased SILENT Bushings. These Bushings Do NOT Squeak and Don't Require Greasing. Heavy Duty Black Powder Coating Gives Excellent Appearance and Protection from Rust! Fits 1965 - 1972 Ford F-100 Pickups (Excludes Flex-O-Matic Models) Do Not Buy Shackles with Cheap Bushings or ones that require Greasing. These only cause more work for you and they end up squeaking anyways. Go with the only true solution. OEM style Rubber Encased Bushings will give you the quality you need in a bushing.