This is a custom designed plunger for the Aeropress XL to accomodate a Comandante C60 grinder within the body. The purchase is for the plunger only. No Aeropress is included, and nor is the rubber seal of the plunger. It is designed to use the rubber plunger seal of the Aeropress XL. This can either be swapped from the stock plunger, or purchased separately as a spare part.