These green-coloured sanding discs have a hook-and-loop attachment and eliminate rust, paint, corrosion, and more from multiple surface types. They measure six inches in diameter and have a fine coarse grit of 150. They have a non-vacuum hole design and the A-weight paper has a latex backing that offers resistance to tearing. The white abrasive coating is made of aluminum oxide and there are 100 sanding discs per box.