The friction substance is splined on the inside, where by it locks to one of the gears. The metal plate is splined on the skin, wherever it locks for the clutch housing. These clutch plates may also be replaced in the event the transmission is rebuilt. A gearbox contains gears https://gearbox-auto10741.blogsidea.com/40193185/gearbox-auto-things-to-know-before-you-buy