Saim Pneumatic 1/8-Inch Pencil Type Die Grinder, 70,000rpm Pneumatic air scribe engraving pen High Quality Product Engraving Tool Easy twist on/off switch.Perfect for detailing work., flexible hose. It's ideal for cleaning and polishing of jewelry, porting cyliner heads, dies or any hobby and craft Notice:Due to shipping,the starter bottle machine oil is not included. Pencil type die air grinder is lightweight and compact for better control when cutting, grinding and polishing