I've owned several mini pumps over the years and never enjoyed using any of them, they have all been worthless garbage! After a little research, I pulled the trigger on the Lezyne Grip Drive HV in the medium size. I just got done testing it on a fully deflated 26x2.35 mountain bike tire, and was easily able to pump it up to 25 psi without much fuss! This will make trail side repairs much faster and way less stressful! Just a well made and well thought out product, im very happy with my new pump!!
I got this pump to make home installation of tubeless tires easier. I haven't yet used it in that capacity, but it works well as a standard pump. I like that it's metal with a large base and doesn't easily tip over. The longish air hose makes it easy to reach the valve stem and the head engages easily and reliably locks into place. The gauge seems to read a few PSI lower than my digital gauge so I add another 3-4 PSI to the target pressure to compensate. The tubeless tires slowly lose pressure as it is, so that can't hurt. I'll try to remember to post again after I've used it to mount some tires.
So far I am really stoked about this little beauty! Have used it to fill gravel and road tires, up to 2 tires on a single charge from low 20s to 40 and 80 respectively and still had charge left. It's loud and it gets warm but a small price to pay to have it in the seat bag! Have stopped carrying CO2 and I have high hopes for at least a year or two. Best feature by far is the pressure reading, setting and automatic shutoff. Pressure gauge appears be accurate based on my highly calibrated squeeze the sidewall tests. I have already recommended to 2 of my riding buds and so far so good. I recommend this mini pump and keep my fingers crossed for it lasting at least a while!
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.