Simple, set it and forget set operation provides easy and exact adjustment(even with cups loaded), while an attractive trim ring prevents customer tampering. Prevents cup damage: Adjustable Lifetime Levers  are engineered with a revolutionary design that prevents marring of cups, while providing smooth, one-at-a-time dispensing. Lifetime Lever  angled construction also prevents damage to cups while loading. Prevents Contamination: Innovative Contamination Guard prevents debris from entering dispenser and Food Safety Blue transparent tube allows for fast cleanliness check. Warranty 1 year