M4*10 Eyebolt thread diameter: 4mm, thread length: 10mm, ring inner diameter: 10.8mm, ring outer diameter: 19mm High Quality: product are made of high grade 304 stainless steel, which offers good corrosion resistance in any environment, have superior rust resistance and the excellent of oxidation resistance. Easy Installation--These ring screws are easy to install and provide you a strong lifting or hanging ability, ideal lifting equipements. Application: Widely used in ports, electric power, shipbuilding, petrochemical, mining, railway, automobile manufacturing, large-size transportation, marine rescue, airport construction, bridges and other important industries as well as mechanical equipment for infrastructure projects. 100% AFTER-SALES SERVICE: If you are not satisfied with our products because of any problems, please contact us by email, we will do our best to solve them, you will get compensation or a full refund.