Astro Pneumatic Tool 1828 ONYX 3/8" Nano Impact Wrench 450ft/lb

Excelente compra

Works great, great power for the size, nice and compact

good small wrench

Have abused this for about 2 years now, saved me some time and came in super handy when I hurt my shoulder used this instead of wrenching inches small space my bigger gun couldn't fit

Very good. Powerful, small, seems well made. I don’t know about 450 ft-lb, but rating an impact tool that way isn’t so great. It is, unfortunately, all we have to compare with, though. Elsewhere in these reviews is a complaint about its performance on loosening head bolts. I believe the review, but take a look at torque limiting extensions.. they are long, and torsionally springy, just like head bolts. When you apply an impact to something that deflects, the impact is lessened. Remember elon musk throwing the ball bearing at the cybertruck window? Oops, neither the window nor the bearing deflected much. The force exceeded what the window could withstand. If he had thrown it at the softer tire, the deceleration and force would be less, nothing would have broken. Same as throwing it at a pillow, but that doesn’t mean the pillow is stronger than the window, or that it wasn’t thrown hard. Same with the head bolt, the longish bolt would twist, only right at the moment the rotating hammer applies the torque, where a short rigid lug nut would come off. Try using any impact wrench with a long extension, it just doesn’t work as well. I notice sometimes that even a deep socket lessens applied torque vs a shallow one. Anyway, I really like this little gun, and was surprised by its power, whatever number is assigned to it. The reversing/power lever and trigger have a nice feel, also. I do think that when the applied torque varies a lot depending on the rigidity of the fastener, socket, and extension (if any), rating the power in ft-lbs is a poor way to do it. Thats what everyone does, though, so hopefully it gives some info for comparison. Maybe energy per blow when stalled?...I Don’t know.... probably true that this won’t loosen something torqued to 450 ft-lb. I’m tempted to call it a lie, but astro is just conforming to a not so appropriate unit. It is quite powerful for a little 3/8 drive gun. (Ft-lb torque and ft-lb energy are not the same, despite the unfortunate apparent sharing of units...one involves motion, the other is using the ‘ft’ only to describe lever dimensions.)