1. Using high quality raw materials of Tungsten stainless 2. Produce by exprienced technician and engineers with Sophisticated machine equipment 3. High precision , tolerance +0, -0.02mm 4. Long lifetime ,and high precision on cutting 5. Competitive price , and large quantity in stock 6. Many difference type power feed contact is available for difference EDM machine WEDOO CNC EDM TOOLS CO. LTD quality manufacturer from China.