I have the malco flip version and use them more often than I should. Rusted or painted hex screws white mastic covered roofing screws. There are many uses and has earned its spot in my bag. Never hurts to be prepared despite the 25 to 30 dollar bit.
I knocked tin for 30 years and sorry to burst your bubble, but a normal speed chuck does the same thing, as the points on your speed chuck spin on the points of the screw it takes it right down, give it a try, use a normal speed chuck or try it on high pressure duct sealer, the tan shit that’s messy but dries hard as hell, besides all that, it’s pretty cool, but not really necessary
