Milwaukee M12 Fuel brushless motor circular saw 5-3/8 and 5-1/2 inch blades 10mm arbor.

Milwaukee M12 Fuel brushless motors are the best in the world for years now. Way ahead of their time 7 years ago and still going strong. Haven't ever burnt one out or even come close yet. Been using my tools for over six years now and can attest to their strength and reliability. Impacts, hammer drill, hack saw, circular saw and more. My favorite 12 volt system hands down bar none. Although this is just a preliminary test I'm more than confident at how good this system is.