7 Disc Cutters & Base for Metalsmiths, Metal Working & Cutting Perfect Circles in Soft Metals. This is a new set of 7 disc cutters and base. Made of high carbon tool steel. These cutters will produce perfect circles from soft metals up to 12 gauge. Each disc cutter set is individually machined and tempered to perfection. Use them with a hammer or a hydraulic press. These cutters measure approximately 1/4", 5/16", 3/8", 7/16", 1/2", 9/16" and 5/8" (6.5, 8, 9.5, 11, 13 and 16 mm)We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.