BlueFire R887D coarse grit cloth file belts are engineered with a strong, self-sharpening zirconia alumina abrasive for fast and aggressive cutting. Featuring an improved lubricating grinding aid, these cloth file belts make an excellent choice for cool-cut, heat-sensitive work and for grinding exotic alloys such as titanium. Featuring a strong, Y-weight polyester backing and resin bond, these durable cloth file belts deliver excellent grain retention during moderate- to heavy-pressure applications over extended use.