Gears, chain tensioner, and lock plate. The Duplex and Vernier design of this gear set allows for precise and fine-tune adjustments to the cam timing, ensuring optimal performance. The billet steel construction of the gears ensures durability and reliability under high engine loads. Whether you have a Mini or Moke, this adjustable gear set is a must-have for anyone looking to maximize the potential of their "hot" cam. With easy installation and precise adjustments, this gear set is perfect for any enthusiast or mechanic looking to optimize their engine's performance. This kit includes billet steel upper and lower gears plus a quality chain.