Modifies a noun

• mechanism: The best ( but most expensive ) versions have self-feeding mechanisms which are safer and quicker to use.

• facility: Precision Cutting Mechanism High shredding performance and a self-feeding facility are guaranteed thanks to the obtuse precision cutting mechanism, with accurate counter blades.

• system: By housing them together in a large tank furnished with ample hiding places ( cork bark ) one can set up a self-feeding system.