Metal Hole Punches - Fractional & Metric Sizes Electrical Knockout Punches and Accessories: 22, 22.5, 30, and 30.5 mm pushbutton/pilot device mounting hole sizes 1/2 inch to 2 inch mounting hole sizes Hole punch tools include metal punches, die and draw bolt Knockout Punches Ruko’s metal hole punch tools include metal punches, die and draw bolt. Use for sheet steel, stainless-steel sheets, nonferrous and light metals, and plastics up to 0.16” (8 ga.) thick. Replacement bolts are offered in the three most popular sizes. Features Cuts holes in thin materials quickly, easily, cleanly and without burrs 3-point cut ensures less deformation of the punched parts, preventing damage to the draw-in bolt The optional ball bearing between draw-in bolt and die plate makes handling simpler and quicker, reducing the force required by approximately 67% The metric draw-in bolts are of the highest quality and are designed for extreme loads Knockout Hole Punches Overview

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