Upon receiving package was simple to open, assemble, and bend 7/8\" and 3/8\" copper HVAC lines properly. Made 90* bends in both with ease, tool worked flawlessly, no kinks or problems. Upon using it in the future I'll apply wax or lube to the pivot points just to see if it helps, but tool worked as advertised first try and bends look good. Would post pictures if I knew how as bends are clean and crisp.