Bead Reamer Battery Operated Cordless Reaming Jewelry Tool 4 Diamond Reamers Battery Operated Cordless Bead Reamer; Perfect for softening rough edges of beads, and to smooth and enlarge bead holes Ergonomic hand-piece is lightweight and comfortable ; Features a push button for easy use White, plastic body; Includes four diamond coated bead reamer points: (Tapered, Pointed, Cone and Blunt) Accommodates up to 1/8" shanks; Always use water when cutting with diamond instruments Runs on two AA batteries (batteries are included); Measures 6 1/2" long