DO NOT attempt to sew or assemble seat belts unless you are a qualified manufacturer. Manufacturing seat belts requires very specialized assembly skills, thread type, sewing machines and knowledge of federal standards. If you do not possess all the equipment, skills and training necessary to manufacture a seat belt, please do not attempt to: repair, re-web, restore, upgrade, alter or build one yourself. Failure to follow this warning could result in serious injury or death in the event of a crash.