The Ol' Joint Jigger RTN-100 quickly notches tubing of up to 2 inch. Manufactured in the States by Ol'Joint Jigger Inc. The company ceased production a few years ago. I purchased direct from the States but never used it. It is still in its original box with full instructions for use. No hole cutters are included but these are available on our E Bay site under Lennox hole cutters.
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