Wubbers Medium Square Mandrel Pliers are good for a number of uses including making even coils, square jump rings, tubes, square beads, and much more! The large, padded, turquoise handles are extra comfortable and measure 6-3/4" long. The square jaws are a continuous square mandrel (as opposed to being tapered). In addition, the jaws are two different sizes so that you may create a wide variety of square shaped pieces. The larger jaw measures approximately 20mm square and the smaller is 16mm square. The length of each jaw is 33mm.