The WTP Supreme Hub Guards are made with CNC machined super-tough 7075-Alloy. Simply replace the cones on your Supreme front and cassette hubs for a perfect fit without having to spread your dropouts. Available in front, rear and drive side options. These guards now feature a heat-treated CRMO insert for longer life. Material: superior 7075-T6 alloy with heat-treated crmo insert, nylon-fibreglass with heat-treated crmo insert. Special Features: designed to fit perfectly to WTP Supreme hub, front, rear and drive side options available.