XUNTOP 25000Rpm Pneumatic Straight Die Grinder with After-Exhaust, Straight Air Die Grinder with Empty Oil Bottle and 1/4" 1/8" Collets Widely Used in Polishing, Edge Smoothing, Deburring

This is a good package, with a good range of tools and accessories. The grinder itself feels well made, although the red handle is slightly loose, but that’s not really an issue. The tools are easy to install using the two spanner’s. In use, the grinder is powerful and works well. A bag or case would have been nice to keep everything together. Overall, this is a good set and suitable for many jobs.

I do a lot of pebble art so have been on the lookout for a handy tool that will take care of both my grinding & polishing needs, and this does just that.This Air Die Grinder has a free speed of up to 25,000 RPM, making it perfect for my needs. You could also use it to for sharpening.It’s nice and lightweight and ergonomically designed to reduce hand fatigue and make it more comfortable to use.It’s made with high-quality gear and ball bearing construction, which should help with the longevity of the grinder. It. comes with 2 collets (1/4" and 1/8"), 5 grinding heads, 1 rotating fixed suction cup, 1 connecting rod, and an empty oil bottle.Overall, I am really pleased. Its efficient, durability, and easy to use.

This die grinder does not come with a storage case just packaged inside a box with a decent selection of accessories to get you started. The die grinder is light and very easy to use, changing the collects is also very quick & easy. The five grinding tools included are not great quality but are adequate for getting started. This is not a tool for professional use, but perfect for the DIYer & Hobbyist. Overall, this set ok but basic.

It works well as a grinder but with a lot of noise, the high speed spinning gives out a high pitch scream when in full spin. There is no oil included and the instruction specified oil before use and always oil again if continuously using it for more than 2 hours.The 1/4 and 1/8 collet is easy to use and clamp down the attachment, most are cheaply made and will take a while to grind down to reduce wobbles.

It works great.

Item ReviewedXUNTOP - 25000 Rpm, Pneumatic Die Grinder (Straight) with Rear ExhaustGot a chuckle when I saw the After-Exhaust in the product title. Guess someone thought that Aft was short for After.✅ Comes with both 1/4 inch and 1/8 inch Collets✅ Rubber cover to protect body✅ Easy to use Safety on Trigger Lever✅ Rear ExhaustOil used for Lube comes out around the air inlet (does not spray onto your work area like the front exhaust versions)❌ Oil Bottle is garbage - very cheap plasticIf you know someone that wears contacts get them to save you one of their old contact solution bottles.❌ Manual does not mention adjusting the air flow. The Airflow is adjustable to limit the speed of the die grinder.I have owned 3 different die grinders before this one and they are all still working fine.I do add oil at least daily (When Using) and I generally do not use them for hours on end.My oldest one is probably 25 years old. So these do last a long time with a bit of care.The ones with the angled head also need some grease in the gears occasionally.This is a light duty die grinder it is excellent for light work. Very easy to maneuver.They do make more powerful versions if you need something with more powerTips for Use:I have had bits get stuck in the collet that were very difficult to remove.When installing the bit ensure that it is not bottomed out. If you push it all the way in then pull it back about 1/8 inch before tightening, then when you are removing the bit you can loosen the collet and bush the bit in to loosen it. (it loosens more easily when pushing in than when trying to pull it out)Oil Regularly - very easy to do just add a few drops of oil in the air inlet.Would Recommend

This pneumatic die grinder by XUNTOP is an ok grinder for a home shop, but I'm not sure about how long it would last in a pro shop.The tool its self is fine. After attaching the quick-disconnect to the tail, I changed collets from 1/4" to 1/8" and back again. No issues. The wrenches supplied are fine, but are rough in shape. They need a few minutes with a file, to knock off the sharper edges on one side. They both do have a hole drilled through - easy to attach a lanyard or to hang up on a board.The grinder would not start until I pushed the safety forward and then engaged the top leaver to start the unit. It spun up fine, sounded good, without any shake, ratter or roll. On power down (air off), the unit spun down nicely, again without any grinding noise or any signs of a defect.The five grinding tool were sub-standard. Each one exhibited an incorrect mounting. Each wobbled around on various axis's, making them pretty much useless for anything. I have always felt badly about that. Why waste everyone's time and money, and make a product that can not be used by anyone! Better to not make it at all.Bottom line - the tool is low to mid-grade unit, that should be fine for light to medium work. Don't expect to hand it down to your kids, though. The included grinder attachments are junk. The two wrenches are ok - just need a little work. Nice to have a little oiler - even without any oil in it.

As a DIYer I work on equipment restoration as a hobby and hitherto used a cheapo die-grinder from harbor freight - which actually served me well. That had a metal body - which is not great when it comes to a firm grip.This XUNTOP Pneumatic Straight Die-Grinder has a rubber-type outer body which renders itself well for a firm grip, and it's ergonomically designed to fit comfortably in one's palm.It needs 90psi at 4cfm.Ensure a few drops of pneumatic-oil is fed into the tool's air inlet port before every use for the tool's longevity.The build quality is solid/rugged - yet light-weight. It works well and comes with the basic accessories to start using it.Awesome value.

This is a decent little die grinder for use in a home garage/shop. It's fairly small, about 6" long. Fits well in the hand, and seems good for light duty jobs. I wouldn't try to use this for heavy duty multi-hour grinding jobs. I also wouldn't use it in a professional shop. It's perfectly suited for use in a home garage where it won't get used every day.It comes with two collet sizes, 1/4" and 1/8" sizes which gives it a bit of versatility. In addition you get 5 various sized grinding bits. They're not the most robust or highest quality but they seem to be good enough for occasional use. I tested the grinder with my pancake compressor and it worked well. Note: It does require 4cfm @ 90psi. Also note: airflow is adjustable, which will lower the cfm requirement. Though I can't say just how low you can use it effectively. It will depend on your setup and what you're grinding. Your mileage may vary! It seems well made and it runs smoothly.Overall it's a decent little grinder. Easy to use and very compact. As mentioned, I wouldn't rely on it for a heavy duty grinding job but it's definitely good for lighter duty work. It needs to be oiled before every use. A small bottle of oil is included. It's a very low quality bottle. The oil is fine, but I doubt the bottle will last very long. Other than oil maintenance, it's pretty straight forward and easy to use. A nice addition to my home shop. Worthy of consideration, as long as you don't require it for big jobs!