The design and functionality of this holder is probably the best of this range of sizes there what it deserved 2 stars if it was just for design and functionality it would get 5. The issue I had was that the face plate of the holder was not milled and protruded over the blade causing it to slide and even fell out...no problem, I just clamped it in an angle vise under the bridgeport with a 9/16 end mill and milled it until the blade was above the holder plate at 32. And that's it..the machinist doesn't have that skill. and many do not even have a windmill