Diamond Crystal Four is a special machine brightener designed to use with a high speed buffer. It can be used by hand or with an orbital buffer. The easy clean up, streak free properties make it a pleasure to work with. Use as a one-step to remove light scratches, oxidation and fading or as a second step on compounded finishes. It produces a slick, oil free and deep, glossy shine. Diamond Crystal Four contains highly refined, white carnuba wax and polymer type silicones for the longest lasting protection.