This is a very nice clone set from Starrett. Very pleased with the fit and functionality. Screw fits very tight corner screw has more play I believe that is on purpose if you use the hole for support the only reason you don't have 5 stars is because it came with what I assumed was a case would resemble the case of a Starrett set or Brown & Sharpe. It's not. It's more like a plastic end mill holder. It works. Generally there will be 1 or 2 more.