Our seat belt stopper is so easy to install,you just need to snap the male and female buttons together,that is done. Seat Belt Button Stop was made from high quality ABS plastic, durable and reliable. There is no welding,no melting,and no glue with this stop buttons. Seat Belt Stop Button will fit any car, truck or SUV seat belt. This stopper kit contains 4 male and 4 female seat-belt buckle stop buttons.