Fashionable design good quality made of 45# steel surface made of high-strength synthetic diamond electroplating wear resistance high efficiency. This product is suitable for filing high hardness of metal such as cemented carbide after quenching or tools nitriding steel alloy cutting tools abrasive deburring plastic chamfering polishing and clamping apparatus etc. also can be used in high hardness and brittle non-metallic materials processing such as glass ceramics jewelry and jade article etc. different sizes it is suitable for all kinds of processing needs.