Gator Aluminum oxide sanding belts are designed to fit the most popular portable belt sanders offered today. These industrial-quality belts have long set the standard for quality and value. From the durable red resin bonding system, it resists heat build-up and humidity for longer life, to the bi-directional flush joint that runs smoothly in both direction, Gator sanding belts are your first choice for your next project. For use on power belt sanders. The bi-directional flush joint allows the sanding belt to run smoothly in both directions. The resin bonding system resists heat and humidity, extending the life of the sanding belt. These sanding belts are designed for heavy duty sanding and grinding of wood, metal, fiberglass and painted surfaces.