25W Powerful Engraver Pen: 7200 strokes per minute high power engraving machine, the variable speed engraver tool can adjust 6 different speeds. Adjustable dial regulates engraving depth and speed to achieve various strokes, from fine lines to deep grooves Handheld Engraving Machine: Engraving pen handle has a soft rubber coating, it can effectively reduce wrist fatigue and soreness after long hours of engraving work. Hand-held giving a natural pencil light squeeze and precise operating experience 2 Engraver Tips: Handheld engraving pen is equipped with 2 replaceable tungsten carbide writing heads, easy to carry and can replacement it at anywhere you want. 2 genuine tungsten carbide tips guarantee smooth, stable, long lasting performance