Knight Manufacturing Corp. introduces the 4,000-gal. Model 8040 ProTwin Slinger. This side discharge manure spreader features the free-swinging hammer discharge and twin-auger design. In manure applications, the spreader can spread solid, semi-solid, semi-liquid and liquid manure. In bedding applications, the spreader's swinging hammers evenly distribute all types of bedding including sand, composted manure, sawdust, chopped straw and wood chips.