Astro Pneumatic Tool 101 Mini Grease Gun

Easy to use, works perfectly, feels like it’ll hold up and it’s cheap.

So far, I'm really happy with this product. The price is competitive and it does everything that you'd expect from a small hand grease gun, which isn't a surprise given how long this design has been in production (the earliest versions date back to the 1930s and Dualco has owned the patent since the 1950s).My only gripe with the thing is the body doesn't seem to seal well against the head/pump mechanism on its own. I think this is a design feature, there's a cast slot cutting across the threads on the bump, but I can't identify the justification for its inclusion in the mold/final product. When you prime the device, you use something inserted into the bottom to force the grease into the pumping mechanism. On mine, which doesn't seem flawed from the factory, there is a little grease that escapes where the body/grease reservoir threads into the head/pump mechanism. Let me emphasize that, once fully primed and running, the tool works flawlessly. But, I still felt the need to cut a small piece of .060", oil resistant silicone gasket material to insure a positive seal. With the seal in place, the two components seam to seat together more firmly and there is no loss of function, so I'm not sure why it was omitted from the product.This is a very useful tool for bicycle and tool service/repair, and I would happily buy it again, but I think it feels better with a gasket of some kind between the body and pump. Also, Astro Tool should really have them cast their emblem or put a logo sticker on the side because there is nothing that really differentiates this from generic copies.

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.

I had purchase this previously but didn't leave a review. Overall this is a nice small grease gun to keep your tool box clean and organized. I use this to apply gear grease on electric scooters.My only grip is how to pressurize the the grease. You have to push the plunger with a screwdriver or some kind of punch. Maybe not it's not that critical for a small grease gun. Other than that I like this little gun.This beats having to have a tub or container of grease which is messy.

Oh yeah!!! I have robots I need to grease and this guy does the job PERFECTLY!! I did have to swap the tip out for a little smaller one but I already had that. I’ve ordered more.

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 love the retro look of this took on my bench. It works great too.

We fill them with Superlube which we buy in the big gun tubes. These little guys get the grease where you need it. They also have standard grease gun tips that screw on so you can put anything grease gun related on them. I have one with a 6" flex tube for Zerk fittings. Small and light weight so it can be carried into a job easily with very little mess.