Four nozzle boom on 19" spacings. Lateral and sublateral pipe is 1/8". Downpipe is 1/4". The one man offset boom is designed to apply pesticides while walking to one side of the treated area. These booms are equipped with an extended 36" downpipe, forearm support, and quick breakdown. The three foot downpipe allows the spray nozzles to be offset, while the forearm support provides comfort and stability.