Haan Front Wheel Replacement 21 Inch Spokes and Nipples (Silver) CR/YZ/KX/RM (5 Pcs) Haan Wheels supplies spokes in both galvanised steel and stainless steel. Straight spokes are available, but also spokes with thickening at the head of the spoke. Spokes and spoke sets come complete with nipples. Brass nickel-plated nipples are supplied with stainless steel spokes, and galvanized nipples are fitted to the steel spokes.