Pretty nifty little bottle. Does a good job flushing out dirt, grime, and whatever else your poor bearings sucked inside this time. Comes with a small bottle of speed cream (good stuff), and a cool little sheet that tells you everything you need to know about how to clean bearings.I use denatured alcohol personally and have had solid results. It's simple, dries quickly, water free (advantage over rubbing alcohol) leaves no residue, pretty cheap... Just flammable that's all, it's marine stove fuel so, you know.My one comment with the cleaning unit is that the bottle doesn't recommend how much cleaner/solvent you should pour in. I've been filling it half way with good results, but the bottle is quite wide for how small the bearings are. Seems wasteful to have to use so much solvent per wash when half the amount would be adequate enough to clean everything. If the bottle were the same diameter as the cap, I think it would be so much better. Not only would you be able to use less cleaner/solvent per wash, the thinner diameter would direct the liquid towards the bearings better, making for a better clean.So yeah, it's good, it works, but could use improvement.