Manitowoc, Wis.-based AM Products & Services offers three additions to its #510000 bottled water cart. Ten-inch pneumatic tires (with split rims for easy tube changes) are easier to wipe down and lessen the likelihood of tracking dirt onto customers’ finished floors. Stair climbers are popular with delivery people who go up and down stairs during deliveries. There’s no need to balance solely on the tires. Because the cart has a large 12″x14″ footplate on the bottom, many customers also use the cart for salt bag deliveries.