1Fitment: Quick removal bolts thumb screws are specially designed for Bronco 2dr 4dr 2021 onwards. Please confirm whether your model is applicable before buying. 2Heavy Duty Material: Quick removal fastener thumb screw is made from high strength steel billet aluminum, rustproof, high temperature resistant, not easy to crack. 3Convenient D Ring Design: Equipped with a built in D Ring, a specially designed accessory mount that aids in the quick and easy removal of the thumb screw. 4Seamless Integration: Expertly engineered to directly replace or upgrade the top screws of your vehicle. Ensures a seamless fit with no modifications required for installation. 5Instant Installation: Features a remarkable design that allows the hard top thumb screw to be installed in mere seconds, saving you valuable time and effort. 8 x Hardtop Quick Release Fasteners