Classic Portage Sliding Dropout Plates - Replacement plates for Hayduke, Japhy, Lorax, Watchman and Walden bikes that use 12mm Through-Axle. M12x1.75 thread pitch. Use 167mm Axle length for 142 spacing on Lorax, use 174mm Axle length for 148mm spacing on Hayduke and Japhy. These plates have a standard derailleur hanger integrated into them. These plates are not compatible with the new UDH plates. Bikes must use the same dropout insert type Left and Right.