Saim 1/8" Micro Air Pencil Die Grinder Tool Pneumatic 3mm with Case,70000rpm Pneumatic air scribe engraving pen High Quality Product Engraving Tool Perfect for detailing work., flexible hose. It's ideal for cleaning and polishing of jewelry, porting cyliner heads, dies or any hobby and craft Pencil type die air grinder is lightweight and compact for better control when cutting, grinding and polishing Notice:Due to shipping,the starter bottle machine oil is not included.