The Cordless Bead Reamer is perfect for softening rough edges of beads and to smooth and enlarge bead holes. This Cordless Bead Reamer is lightweight and has an ergonomic handle for comfort. The motor operates at 10,000 rpm. Includes three diamond point tips (large and small tapered tips and an angled tip). Uses two AA batteries (Not included) Tip: Always use water when cutting with diamond instruments.