Review on 🔧 Ultimate Performance with 4Fl SE Carbide End Mill: A Game-Changer for Precision Machining by Jeff Kersey

I only used this bit for about 20 minutes. I recently received a PM-25MV router and in order to fit a vise onto the router the shanks and screw heads had to be routed to fit the T-slots. This end mill cuts through steel like butter and leaves a very nice finish.