Earth & Turf Products LLC Announces a new topdresser, the model 320. The 320 is a 1 cubic yard capacity topdresser that has a dual wheel drive ground drive system and comes with 26 x 12.00-12 turf tires. The 320 utilizes our exculsive design widespread beater that will deliver topdressing material evenly up to 72” wide. This is a great topdresser for schools and universities parks, municipalities, large estates and golf courses.