A great solid 3/16" punch that unfortunately had little to no body/shank size information in the product description and was too thick for our needs . included a photo of the perforator on the grid for size info. Dimensions: 4" long, 3/8" body width, 3/16" hole size. Made of softer steel and will require more frequent sharpening as it loses its sharpness. But the result is a very solid construction. Not suitable for our purposes, therefore return.