1)bead reamer/battery operated(XQ120),dead reamer,battery operated,diamond bead reamer 2)the best bead reamer on the market 1)bead reamer/battery operated(XQ120),dead reamer,battery operated,diamond bead reamer2)the best Battery Operated Bead Reamer on the market.Requires 2 AA batteries.3)Easily enlarge holes in pearls,gemstone,or other beads.4)With 3 replacemet tips