Used to accurately check tire pressures. My Silca digital floor pump has to over-inflate slightly, first depicting pump pressure going into tire, then settling down to residual pressure remaining in hose after presta valve closes. So I overinflate by about 3-5 psi, then attach this SKS gauge directly to the tire valve. Gives more accurate pressure actually in the tire. Can then tap the pressure release button on the gauge to set pressure just where I want, and know it is as accurate as possible. It takes a bit of practice to get the feel of holding the gauge in place. You also have to touch the mode button on the gauge to see the pressure changing as you release the excess. But better than my former process of checking tire pressure with a separate gauge after pumping, having to disengage from valve, tap valve to release, or reattach pump to increase, then apply gauge again for final check. Lighted digital display on this is easy to read compared with a dial gauge.
Great product, strips grease and grime pretty quickly. It does contain petroleum distillates, which are diluted enough to not be flammable and not be caustic to your drivetrain/paint job. Does a great job of stripping wax too! That being said, do not spray it on your chain if you just waxed it. It will break down the wax and remove it in a few minutes. I recommend removing your wheel / cassette beforehand, and be sure you thoroughly rinse down the areas you've sprayed the cleaner. It will leave an oily residue if you don't. Also, wear gloves - even though it's biodegradable it's not great for your skin.
I've had this pack for about 3 years now, and put it through hell. No issues. Those saying you can't fit a spare / levers / multitool / co2... yes you can; it is possible. It's not roomy by any means, but as long as you carefully pick what you put in the pack, you're good. Keep things flat. For road rides I keep the following: 32-42 butyl spare, one Pedros lever, one much thinner ProBike lever, one Silca Italian army knife, one 20g co2 w/inflator, one Park patch kit, one nitrile glove and one small microfiber rag. Few band-aids. For gravel rides I just stuff the Dynaplug pill in there - and it also fits (tightly). Almost everybody I ride with has this seat pack, it's kind of the standard these days. Worth the extra coin.
Got it a week ago and have been testing it expecting I'll want to be familiar with it if I actually HAVE to use it which is what I bought it for- replace 20yr old mini pump for on-road repairs. I've heard people replacing floor pumps with this. No way. It's LOUD!!!!!!!! Louder than the pump you use to blow up your typical air mattress!!! The detachable brass chuck gets VERY warm. But the reason I'm not giving this a ringing endorsement is the amount of trouble I've had getting it to consistently inflate. I've tried on tubes and tubeless. It's very finicky. Will be inflating at about 1psi/sec and then suddenly *stall*. It's still running but something with the chuck seated on the valve isn't perfect. Like you have to hold it perfectly in position. You adjust it and it gets going again but it can be rather frustrating- especially if while trying to get the chuck reseated you've actually LOST 2-3 PSI! I think with practice it will get better. Make sure the first time you use it is not when you really need it! Auto shut-off at preset pressure is great! Same issue with valve sealing makes using it as a pressure gauge kind of hard. Again, might get better with practice. I have only gone as high as 70psi so far. Took 2 minutes because of finicky valve sealing.
