Tomei Adjustable Camshaft Pulley Cam Gear Sprocket for the Nissan Skyline RB20DE(T), RB25DE(T), and RB26DETT. The pulley and gear are made from Duraluminum material for lightweight and strength. One cam gear merely weighs 337g. Tomei cam gear uses sliding type to adjust crank angle. Tomei’s quality cam gear for your Skyline engine.