2in Diameter with 30mm x 30mm x 50mm long shanks for a Trumpf Universal Sheet Metal Machine Nibbler machine Thumbnail Shrinking Dies for 18g to 15g material, TIG welded shanks, dies machined from 4140 tool steel and polished to a smooth finish.  These will shrink fairly aggressively and when set up properly will not leave die marks that the planishing hammer will not smooth out.  have been manufacturing these dies for over 10 years with our tool and die experience, we use them in our shop on various projects using aluminum or steel and offer them for your purchase. We have sold them worldwide to many others in the metalshaping trade.  Please see our other Pullmax Shrinking Die sets available in different sizes for other models. KEYWORDS: Fay Butler, Clay Cook, Covell, Cook Enterprise, Proline, Power hammer, pexto, Planishing Hammer, Chicago Pneumatic, Yoder, Milwaukee planishing hammer, Pioneer, Trumpf Universal Sheet Metal Machine