CALIDAKA Micro Air Pencil Type Die Grinder, Air-Powered Micro Die Grinder,65000 RPM Pneumatic Pencil Grinder Tool,High Speed Micro Pneumatic Air Pencil Die Grinder Kit,3mm n 2.38mm Capacity

Well made works well

Works good, will need the correct air chuck fitting(never seen the one they ship with).

Working great

Bought to engrave my tools already saved a part worth hundreds at work. No clue about longevity but it's great. Invest in a set of Dremel collets if you don't have them they come in a dremel bit set. Other then that 10 out of 10

For a low end tool, it's not the worst. Time will only tell 🤔

it does spin free and smooth as it should. the issue is the collet is made out of pot metal and is too small. i could not get an 1/8"(.125") carbide bit into the collet at all. i expected some room to play on the 3mm(.118"). because it was tight, i needed to ream the hole. no problem. as i gripped the collet, i realized it bent way too easily with no force. it did not spring back as it would if it was made from a proper spring steal. i worked it out to barely fit, but not well. it does advertise 3mm so i cannot gripe about the size; only the quality.in the U.S. the 3mm is worthless.

Motor seized up with normal use. Oiled as directed and everything. I used it almost daily and never let it set with out oil. Normal dremel bits did not fit in the end. Had to get a actual dremel brand collar thing.

The Collet that comes with this item is brass and made for 1/8" shank BUT it doesn't not accept any 1/8" bits!! And when forced it breaks VERY easily! I had an old one I got from Harbor Freight and it had a steel collet that fit just right. It now works quite well BUT if you don't have an old steel collet hanging around you'll be sending this unit back as soon as you get it!!!Make a STEEL COLLET THAT FITS -- WHAT'S WRONG WITH YOU PEOPLE???