1) Material: 304,316L 2) Made from casting 3) Size:25.4mm-319mm 4) Type : Single Pin ,Double Pin and High Pressure Clamp 1,we have diffirent types clamps :2, the diffirent Wing-nut for you choose :3,Our packing way :About Us: Stainless Steel Heavy 13SF Duty Clamp double pin 304/316L