I'm a tech for Mercedes, have about 8 years in the business. Own a set of flank drive snap on wrenches and a set of ratcheting blue point wrenches. Use the blue points literally every day on almost every job I do. Use the 22mm to turn the head on my oil filter wrench. In eight years the 22 mm needed to have the internals replaced about two years ago under warranty. That is the sole failure and I beat the hell out of these things. You'll be fine with them.