Cordless Sharpie DX Adjustable Hand-Held Tungsten Grinder - Black Ops & Auburn Red - Perfect for Welding, Metal Fabrication, and DIY Projects

I had my first Sharpie DX tungsten grinder lasted 3 years. 2 nights ago the head became extremely hot, and started screeching. I figured I'd try the cordless version. It came next day from Amazon. I charged the battery, put it in the tool and it just keeps flashing 4 red lights and won't power on. I'm exchanging it for another but that doesn't help that I'm without a tungsten grinder today. Hopefully the exchanged one will work when it gets here.Update...The replacement grinder works like a champ. I definitely love this grinder!Much nicer than sharpening on a standard pedestal grinder. Collets that tungsten fits in are sloppy in their fit resulting in inaccurate grind angle. Diamond grinding disk is small in circumference and results in non-parallel grind marks on tungsten arc swirl is the result. Nice portability, quality Milwaukee power just a crappy head.Definitely worth having but not 400$ worth…