This saw arbor was design with lathe live tooling in mind. We built these for our Doosan Lynx 2100 and it works great in the Live Tooling ER-20 Collet holders. 

It will also work with any milling machine, Just hold it by the 1/2" Shank or you can grab on to the 3/4" shoulder for a more aggressive hold on it.

The Shank is 1/2" dia. and 1.44" long.

The overall length is 3.75"

The face plate is .20" past the bottom of the saw blade, and 1.36" dia.

The largest Dia is 1.36"

The main body is  2.25" down from the 1/2" shanks shoulder to the top of the blade.

SAW BLADE NOT INCLUDED