"This is a high quality holesaw. 79mm, perfect for cutting desk access holes for 80mm inserts. Have cut several holes with it already and looks like it will do hundreds more. Cuts through wood like butter!
I use a standard arbour with it, the attachment it comes with is easy to remove and replace with a wrench or socket for using a standard arbour.
Recommend giving it a couple of taps with a hammer before undoing, or use an impact driver with an attachment.
Good quality stuff, as to be expected from Bosch!"