The Draper sanding disc has a size of 150mm x 20mm with a medium coarse grain size of 80g. With this wheel you will also get 5 reducing rings with bore sizes of 12.70mm, 15.90mm, 19.05mm, 22.23mm and 25.40mm, fit most bench sanders. This is suitable for general grinding, deburring and sharpening tools, but only for dry cutting. Like all Draper products, we have them manufactured, tested and certified according to the current standard EN12413:2019.