Powered by a 1125hp (839 Kw) Tier IV, Caterpillar C32 engine (or an export only Tier II engine), the 6710D is designed for the toughest jobs. With a feed opening of 50 x 66 inches (127 x 168 cm), the 6710D can even process large stumps that used to be reserved for tub grinders. The grinder is particularly suited for land clearing operations or other applications where mobility is desired. Track mounting also reduces material handling costs in conventional recycling yards as well.