6300 Chapin 7-gallon Stainless Steel Tank Cart Sprayer Heavy gauge 7-gallon stainless steel tank moves easily over rough terrain. Fills, mixes, cleans easily with large tank opening. Large industrial pump for easy pressurizing. 18-inch extension with locking brass shut-off. Disc wheels with 8-inch semi-pneumatic tires. Adjustable steel tube framing and comfort grip. Detaches from frame for cleaning and storage.