I needed a general purpose grinder for my all round job. Comes with a regular 1/4" metal grinding wheel. I also bought a 1/4" stone circle and a 1/16" metal circle to complete my set. Both metal circles have been used with no problems. The high speed Wheel Spin gets the job done.The only complaint I have is that the wheel release switch is hard to press when installing or changing wheels.No carry case so I use the original packaging as one.