- Heavy-duty die cast aluminum. - Molded Long rubber flap to protect against abrasion of inner tube. - Ribbed alloy contact surface locks tire securely to rim. - Recommended for use on all off-road machines and any application using low tyre pressures. - STUD & NUT M8, High Tensil 8.8 steel. BZP silver finish. - Best selling Security Bolts. - FIR Racing products are a high quality replacement part and carries our guarantee of your satisfaction. - Please check the image before ordering to avoid mistakes.