Four 
Four side-discharge buckets from John Deere, ranging in width from 60 to 84 inches, unload from either side of the bucket and feature a direct-drive hydraulic motor on the discharge belt. The SD (Dust) models are for lighter materials such as mulch, sawdust and straw; while the SA (Aggregate) models are for materials such as lime, sand or gravel. An agitator prevents light materials in SD models from bridging and a bridging plate in SA models keeps weight off the belt to prevent motor stalling. Worksite Pro side discharge buckets are compatible with standard-flow Deere skid steers and compact track loaders.