Mounted on a 3/32" (2.53mm) mandrel, this BananaSandpaper roll is ready to use and is ideal for your finishing tasks. The mandrel is color-coded to help you quickly and accurately select the grit you want. As the abrasive wears, simply peel the paper back and tear it off to expose fresh abrasive. The roll is made up of a 17" (450mm) length of high-quality abrasive paper.