Qty 2. The Cyclo Toolmakers ProGuard Orbital Backing Plate features permanently adhered high quality dense hook material (the same material we use on the Rubber Velcro Boots). This provides an improved mating hook and an increased area of hook material. The white plate allows you to tell if it is the new and improved version. The low profile provides better control and a non-marking bumper for safe operation. This design still allows for faster pad centering, and is great for quick and easy pad changes.