When space is limited, the turntable is a space-saving answer. It rotates smoothly. It is easy to turn even when fully loaded. This unit includes ball bearing base, dividing trays and a baseplate. This assembly holds 12 Visible Storage Cabinets (series CODE S550 CODE S551 CODE S552 CODE S554 CODE S556 CODE S557) in three layers - each layer contains four cabinets which are ordered separately. Easy assembly without tools!