Roller adjustment knob:adjust the thickness of the dough, both sides of the same rotation adjustment, so that the thickness of the dough is uniform. Made of food grade stainless steel, will not rust. You can squeeze buns, bread flour, dumpling skin, noodles, wonton skin. Cutter adjustment knob: adjust the width of noodles, tighten the knob, grind out narrow noodles, loosen the knob, grind out the wide noodles, both sides of the knob need to adjust the same. Noodle Width: 1.8mm or 2.5mm.Thickness of the Dough: 0.1-20mm. If a wrong mailing address is provided, we will not take any responsibility of it. We will offer solutions to such cases.