The Original with Ceramic grinding mechanism. Top snaps off providing a large opening (2-1/2" x 1-1/2") for easy filling. PepperMate™ has a very large storage compartment for peppercorns. The mill can be adjusted to produce fine to super coarse pepper grains of consistent size. Your adjustment will not change during use or when you refill the mill. Side turn-key is designed for easy use. Base may be used to collect freshly ground pepper for accurate cooking measurements. Mill can also be used without the base. A superb pepper or spice grinder.