Handy little tool when you need to do some cutting or grinding. I cut off bolt heads and split a steel collar with this cut off wheel. Great quality and it comes with 2 wheels.
The tool itself works fine and has plenty of rpm to cut thru various items. DO NOT purchase this tool if the primary use of this tool is to cut METAL. The so called "see thru" shield is made of plastic and melts when your cutting metal. This is why all other brands have a metal shield. Very poor design flaw as most uses for a saw of this type is for metal cut off.
I've only used it once so far but it cut through my garage door bracket a whole lot faster than a hacksaw. I oiled it before use and checked to be sure the pre-installed cutting disc was tight. Sometimes on rusty old bolts this is the best option. I didn't experience any plastic safety shield melting on my short duration metal cutting. It came with a spare cutting disc.
I bought this to save me time cutting an exhaust pipe to replace a welded flex pipe rather than a hacksaw. Great tool, let the sparks fly.