Abranet is a revolutionary product for vacuum-assisted sanding operations. The new, patented disc will fundamentally change your work environment. Abranet has aluminum oxide grain on a nylon backing and can be used for dust free sanding. Use protector pad 9955RP or 9956RP with discs between the sanding disc and your backup pad to prolong backup pad life. Use interface pads (9155RP or 9166RP) for contours and rounded surfaces.