This is a precision - machined steel clutch drum. Note that sprockets are sold separately.

Using this clutch drum is straightforward. Just install it in the appropriate place following your vehicle's standard installation steps. When using, make sure the connection is secure to avoid any looseness. As for maintenance, regularly check the drum for signs of wear, like scratches or dents. If you notice any significant damage, it's best to replace it. And remember, since the sprockets are sold separately, you need to ensure they are also in good condition and properly matched with the drum.