We are a high precision machining parts manufacturer in china. We can make the parts according to the drawings fully and meet 0.00012 inch tolerance. Material: aluminium. Stainless steel, brass, pom and others Size: 10mm to 650mm, according to your drawings Tolerance: +/- 0.00012inch Surface polsih: up to ra0.4 35 x 30 x 25cm exported cartons