I have just uncovered this in my dads workshop stores. He bought this to refurb a customers industrial Saw but they went bust before paying for it. 1 - Industrial Cut-Off - Grinding Tool Metal Safety Guard - 12" Internal Width. The mounting bore is 2-1/8" I/D. I'm guessing the buyer will fabricate this to suit there own purpose. Please have a look at my photos as this will give you the best idea of what I am selling. If you need any more help please ask and I will combine postage costs.