Set Of 2 Wire Grooved Rollers For Use With Metal Wires - TJ9999-WIREThis set of wire grooved rollers are made to use with a rolling mill (not included), used for making jewelery. Each one is faricated from selected high carbon steel, and will bend your precious metal wires as you wish. There are two different sizes: 5 3 4 Inches long is 42. 4mm in diameter, and the 6 1 2 inch roller is 42. 7 mm in diameter. Great for making bangle earrings.* Grooved End Attaches Easily To Standard Size Rolling Mill Fabricated from