I picked up the NEIKO 10649A Micro Air Die Grinder (1/8" capacity, 54,000 RPM) for fine deburring and cleanup work in the shop, and it’s quickly become one of those tools you wonder how you worked without.What I like:Slim pencil design — super easy to control for precise workRuns very smooth at speed — minimal vibration, even at 50k+ RPMPerfect for carbide burrs and small abrasive toolsLightweight and comfortable for longer useGreat power for its size — it doesn’t bog down on light metal workI’ve used it for cleaning up edges, removing tiny burrs, smoothing pockets, and general detail work where a full-size die grinder would be overkill. As long as your air system is clean and regulated, this thing runs beautifully.Shop tip:Use a fine-mist oiler and keep your air dry — these high-speed pencil grinders like clean lubrication.If you need a precision air grinder for delicate cleanup, polishing, or light detail machining, this one is a great value for the money. I’d definitely buy it again.

Build quality fantastic, power is fantastic, easy to use and very fast with 100% control. Jeep oiled and it’ll last a long time!

Ok

Got to use this today and decided to see what 50,000 rpm looked like. While just holding it without touching anything my Dremel wire brush immediately went pear-shaped . Good thing it stayed in the chuck otherwise it may have gone suborbital. I don’t think I’ll try anything other than burr tips from now on.Other than that it appears to be good quality and runs great. No instructions on how to oil it except to put it at the inlet port which is at the end of the 3 foot hose. I suppose you could disassemble the housing and put oil directly into the turbine inlets but that seems like a hassle.

This little guy makes my life easier. I build knives and primarily use this with carbide burrs to make small adjustments and chamfer pin holes to hardened blades - I also use with sander bits for shaping handles and other detail work. ...when I parked the forge under a bar the tool was clamped to I melted the hose and couldn't find a replacement. Since life without this tool isn't worth living I replaced it immediately.