Portable Engraving Pen Mini Electric Drill Pen LED Speed Display Carving Pen Engraving Machine Graver Tools Rechargeable Grinding Machine

Features:
C-harging and plugging dual use, can be connected to the power while charging, more efficient.
There is an inner hexagon wrench receiving hole at the rear.
Jacking type grinding heads lock mode, no skid.
LED displays power, speed, and load information, giving you more accurate control of the grinder.
Made of fine quality material for long service time.