Ck tools sheet steel hole saws ck tools t3202 022 this 22mm sheet steel hole saw from ck tools has been designed to produce a smoother cut making it ideal for both the professional and diy enthusiast equipped with thinner material so the holesaw has less material to move for a quicker performance it automatically ejects the slug removing the need to poke the slug out with an implement of some sort a smooth result is also achieved via the teeth which have a constant pitch at 8tpi meanin