Beadalon Artistic Wire Micro Engraver Tool With Light - Micro Engraver Tool with LED Light, 1 mm / 0.04 in and 4 mm / 0.16 inch Tips, 1 Allen Wrench, Requires 2 AAA Batteries - not included. It has a compact pen-like design so you would hold the micro engraver as you would a pencil to personalise or add texture to your jewellery.