The Wubbers large square mandrels can bring variety to jewelry designs through shapes and angles that guide your wire in exciting new directions. They are designed to handle up to 12 gauge wire and 20 gauge sheet metal. Use one of the two jaw sizes to create a beautiful, texturized square tube or use just a corner of the jaw to form a lone right angle. Large square links provide a punch to any design and square jump rings completely redefine chain making! Enjoy the luxury of holding the long, comfortable handles of these pliers without having to worry about hand or wrist pain. Measurements: Total length of pliers is 6.75 inches. The length of the jaws from tip to joint is 34mm. The jaws have diameters of 10 and 13mm. Rated for use with dead soft sheet metal up to 20 gauge thick and dead soft wire up to 14 gauge thick. Made of high quality stainless steel. Leaf-spring box joint. NOTE: These pliers are intended for beading and other fine hobby work. Not recommended for heavy duty applications such as automotive, home improvement, or maritime use.