Astro Pneumatic Tool 101 Mini Grease Gun

I have a few of these things. They work well. They not like the cartridge type grease guns tho. They work best with a thinner grease like 00. I use these to grease my chainsaw bars and such and they work well. One fill up lasts a long time. They low priced enough that I have one on the table where I clean and sharpen my chain and one in my chainsaw bag. I have a couple on the shelf in case I lose or break one.If you have a chainsaw bar that requires sprocket grease, get a bottle of 00 grease and this little grease gun. Works great. A lot cheaper than buying those disposable things.

Great quality main use is for bicycle greasing. Well constructed and will last a long time.

This thing is awesome. I thought it took cartridges but it doesn’t, which is great. I fill with my large grease gun, slap it down until full, screw on cap, push from bottom to prime with a screwdriver and it works great! Very happy with this little grease gun for my chainsaws.

The use ,for oil seal pre lube install.

This thing is awesome! I used a small plastic spoon to fill it, I used the handle of the spoon to press up the pressure plate, and primed it by pressing the big button a few times. This has to be the most precision grease gun, ever! I use it to lube and prevent rust on all the parts of my four pedicabs and all my nine bicycles.

First I bought a tube of bike lube (Finish Line) with ptfe (e.g. teflon). It works, is easy to squeeze, and a bit messy. But a 16 oz jar of grease and this grease gun is a much better deal and a more lasting solution. I'll still take the 2 oz tube of bike lube when I travel with a disassembled bike. (Whatever happened to 35mm film canisters?!)My grease gun arrived with a perfectly fine pinpoint hole in the nozzle, ready to go.True, the instructions are on the side of the grease gun. 1) I unscrewed the top. 2) I used a piece of plastic coated cardboard from my trash can as a paddle (cut to just fit inside the tube,) and started paddling in my grease. (True, the picture shows a finger.) 3a) Once I had crammed in as much grease as I could easily fit, I put the lid on firmly, shoved the disk inside the bottom toward the top with a screwdriver, and then took the lid back off. (True, this was an extra step not pictured on the can.) 3b) Now I took the cartridge and sharply hit the bottom of it downward onto my other hand. What do you know, the grease slid in, allowing me to again fill the cartridge. (True, the pictures don't show filling the cartridge more after the tapping.) Filling it twice was good enough. 4) I screwed the top on tightly (by hand firmly) so the grease wouldn't leak through the threads, pressed up again through the hole in the bottom with the screwdriver, more firmly this time. (True, the instructions show the cap on, while the previous picture shows it off.) 5) I began to pump the spring-loaded plunger (with the tip pointed toward my open can of grease.) A satisfying, but highly controlled thread of grease emerged from the pinpoint tip. (True, there is no fifth picture on the can.)I'm actually using Finish Line Ceramic Grease, which has both ceramic and fluoropolymer (ptfe, teflon, etc) additives. A 16 oz tub ends up cheaper than multiple tubes of grease, even including this grease gun.But still, a ziploc baggy with a hole cut in the corner, and automotive grease would be cheaper, so this is more or less a little luxury for a guy who buys his fancy bikes off Craigslist.... To each his own!

I have been using the "other" types of bar greasers for decades and they were fine. BUT this grease gun is far, far, far superior to "those".Why? It has a lot more power and makes greasing the nose super easy. One easy-to-apply thumb pump and you are done. PLUS, you can fill it with grease for a BUCK+- and use the grease YOU want to use. In my case, I have 30 gallon barrels of grease and the fill cost is almost pennies.This grease gun works amazingly good. Highly Recommended.

I can see why it's received some bad reviews. Likely because they didn't correctly full and prime it. You need to make sure you get all the air out. Search for YouTube videos. It's simple.