The Diamond Digger uses 4.5" hard sharpened steel cutting teeth that can be replaced when worn. The pneumatic wheels allow you to roll for transport, instead of carrying it. This field groomer is features a hot dipped galvanized steel frame. A pull chain is provided on the front and there are hooks on the rear for easy attachment of any drag mat. The Diamond Digger is designed to hold up to 3 cement building blocks (not included) for additional weight when necessary. Remove the wheels to turn the groomer over and use it as a leveling sled. It is recommended that a tractor pull the Diamond Digger.