Used Diamond MillsWheels. I have three used Mills with plenty of life left. Will sell one or all. $35 each. One 60 grit, one 120 grit, one 200 grit. Shank is 1x 3 Mill is 1x 4If your not local, I am willing to send this stuff to you. You can pay by Pay Pal if you want to go that route. We can work out shipping cost if youre interested. .