The 13/15/18 Speed Thread-On Gearshift Knob With Adaptor is a practical and versatile product that fits most makes and models. Made from quality die-cast metal with a chrome-plated finish, it offers durability and a sleek appearance. With an inside thread of 1/2 inch - 13, it ensures a secure and reliable connection. The mounting adapter (UP70589) and shift knob (UP23496) are available separately, allowing for customization. This gearshift knob is a reliable choice for those seeking a functional and stylish upgrade for their vehicle.