FREE SPIN – Unlike traditional twist crushers which stop crushing when the top is screwed tight against the bottom, MAXGRIND features a unique screw design which continues to grind medication when tightened. Once the top is screwed down to initially break and crush pills, a simple reverse twist then slight pressure on the top allows the grinding surface to freely spin similar to a pepper grinder, continuing to grind medications without any resistance and with total ease. LESS RESIDUE LEFT BEHIND Ridges on the grinding surface provide fast, dual action crushing and grinding with minimal residue left behind. Uniquely shaped and spaced ridges on the top crushing surface both crush and grind medications into a fine powder that is sifted/funneled into the bottom serving cup. These ridges are designed so that powder is pushed out and funneled through the crusher well slots into the bottom serving cup, leaving less residue behind which ensures a more complete dose. INTERNAL CLEANING FEATURE – If you continue to free spin in the upright position after crushing is complete, air circulates within the crusher blowing remaining powder into the bottom cup, resulting in minimal medication remains on the grinding surface and in the crushing well. Clear, snap on serving cup allows easy viewing and collection of crushed medication. TOP PILL STORAGE COMPARTMENT with Hinged Lid – Great for storing pills when traveling. COMFORTABLE AND EASY TO GRIP anti-slip symmetrical design – Ergonomic design and easy to grip rubberized material provide comfort when crushing and aid in the twisting effort.