Combination rolling mill 110 mm4 MM max openingSteel forged handleSolid hobbed steel gearsPrecision high strength housingPrecision engineered for lifetime of useThe combined rolling mill is made of precision steel, which has super strength and durability Produce metal foil as thin as .001 inch Product size: 25×14.5×29cm / 9.8*5.7*11.4 inches Package size: 34x34x20 cm / 13.39x13.39x7.87 inches Gross weight: 22.5 kg / 49.6 pounds Gear ratio 4:1 Roller width 110 mm Roller diameter 55 mm Maximum opening 0-4 mm Flat area ( /- 0.01mm) 53 mm Square wire( /- 0.01mm) 1.0, 2.0, 2.5, 3.0, 4.0, 4.5, 5.0 Ring shank- half round ellipse 2.5x1, 3x1.25, 4x1.5mm Made from precision steel for ultra strength and durability. Solid hobbed steel gearsPrecision high strength housing With forged handle, simple and convenient to use.Reduction gear ratio of 4:1 allows the rollers to make one complete turn for every four turns of the rolling mill handle. The combination rolling mills are ideal for jewelers and crafts-people. Rolling Mills are designed for cold rolling metal to produce thinner gauges of sheet metal and wire, transferring textures to your metal and to make the thickness uniform. Every product is under strict quality control before sale. If you have any question, we provide 24-hour online service and email service.We will try our best to solve your problem Note: Two colors are shipped randomly