The Diamond Digger uses 4.5 sharpened and hardened steel cutting teeth - can be replaced when worn. Pneumatic wheels allow you to roll for transport, instead of carrying it. Diamond Digger is 14 W x 6' L with a hot dipped galvanized steel frame. Pull chain is provided on front and hooks on rear for attachment of drag mat. Designed to hold up to 3 cement building blocks (not included) for additional weight when necessary. Remove wheels to turn groomer over and use as a leveling sled. Recommended to be pulled by a tractor.