Hss hole cutters

[123hotchef]

they do get hot and blunt if u go too fast

 

[brightspark]

not much good when u use them portable in a 2 speed hand drill fast and slow

 

[123hotchef]

same here mate thats what most of my hole cutting is done by trigger can slow or speed up the slow or fast too

 

[Kent]

not much good when u use them portable in a 2 speed hand drill fast and slow

Most hand drills run super slow if you don't depress the trigger to full on. I guess 250- 750 can be had with most of my own corded and battery drills this way? Just guessing mind but the main hand drill I use with hole saws is my makita sds corded
with the quick change 13 mm chuck
Can do 22 mm hole saw easy something like 300 ish as a guess. Anyhow it cuts through 5 mm easy