Aluminium oxide sheets reinforced with layers of nylon fibre backing for extra resilience and durability. Use for cleaning, sanding and burnishing wood and metal. 6mm arbor. Suitable for use with most power drills. Aluminium oxide sheets reinforced with layers of nylon fibre backing for extra resilience and durability. Use for cleaning, sanding and burnishing wood and metal. 6mm arbor. Suitable for use with most power drills.