Bead reamer, steel and acrylic, diamond dust coated. Sold per 4-piece set. This four-piece bead reamer set has all the shapes and widths you'll ever need. Steel tools encrusted with industrial grade diamond are used to hand grind bead holes larger, and take out unwanted burrs from bead holes before stringing. The bead reamer features colorful plastic handles and comes complete in pouch holder.