"AJD" and "AHD" series punching units are specifically designed for punching holes in stainless steel from 1/8″ to 1/4″ thickness. Available holder widths are: 2", 2 ½", 3" and 3 ½". Holder width is important because it defines the minimum hole to hole distance. This series comes standard with premium, wear-resistant tool steel designed to handle tough stainless steel punching applications. Depending on your material thickness, punch diameters are available from .2812" (7.14mm) to 1.500" (38.10mm). For more information on punching stainless steel, click here.