This Drake Muscle Cars retainer secures your shift boot and allows you to use a wider variety of aftermarket shift knobs. This shift boot retainer is crafted from solid billet aluminum and then given a black anodized finish. It features a 12mm x 1.25 thread that will fit most aftermarket shift knobs. It is a direct-fit replacement for your pony's factory piece, so installation is fast and easy. Made from premium materials this retainer will be durable enough to last for years to come.