The machine scarifies, remixes, spreads and levels existing gravel or new material. The GRAVEL DOCTOR® equipment is designed to mount on a category one 3-point hitch on a compact 4 wheel drive tractor. The machine is available in 4′ 6” to 8’ sizes. Larger sizes can be custom built. There is no direct competition to the Gravel Doctor in the current market place. Tractors, bulldozers, and road graders are considered indirect competition because, unlike The GRAVEL DOCTOR® system, these traditional machines scrape the surface only. When compared to conventional heavy machinery The Gravel Doctor’s® design achieves equal or superior results, in less time, while preserving the original landscape.