304 Stainless Steel O Ring Heavy Duty Solid Metal Round Rings Welded Smooth A2. ? High Quality Material? Made of A2 (304) stainless steel with top-notch craftsmanship and longevity. The use of electroplating technology, the surface is smooth & burr-free and has good heat resistance, high strength, and high toughness as well as qualities that inhibit corrosion and rust. ? Seamless Welding? Welded closed design for extra strength, no solder joints on the surface, mirror smooth and burr-free, good gloss and not easy to fade. ? Sports Applications? Great for a variety of outdoor activities such as camping, anchor battle rope, hiking, travelling, saddles, horses breast collar, boating, rigging, gymnastic, paracord buckles. ? Wide Application? Our metal macrame rings are accessories for hammock, wind chime, macrame ornaments, sewing projects. Suitable for decorations on handbag, shoulder strap, harnesses and clothes, luggage belts, backpack. They can also be used for plant hanger, tissue ring, webbing, strapping, leather, ribbon, dog collar. Material: A2 Stainless Steel. Grade: A2-70 (304). System of Measurement: Metric. Size: Thickness x Inner Diameter. Ring Thickness: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm. Inner Diameter: 15mm – 150mm. A2 stainless is commonly referred to as 304 or 18/8 because it contains 18% chromium and 8% nickel. A2 is an austenitic stainless steel and is almost non magnetic but will still stick lightly to a magnet due to the cold working process. A2-70 is the most commonly used grade, the 70 represents a tensile strength of 700N/mm2. A2 is suitable for a wide range of applications in alot of different industries such as the automotive industry in applications such as body panelling and bumpers etc, the food industry and catering due to its ease of cleaning and corrosion resistance, also commonly used in the engineering industry and architecture, A2 is also favoured by the remote control and model making enthusiasts. Also a favourite for many different DIY jobs in and around the home and garage for those jobs where a standard BZP fastener will not do. In general A2-70 is ideal for a whole range of uses where a good finish is needed on an interior or exterior applications. Package included: according to your choice. Select your requirements from the drop down menu above. In our store, you can find more items in a variety of sizes, shapes, colors, and materials. Please get in contact if you have any special requirements so that we can tailor our services to meet them. All products in our store are elaborately made. We care about our valued buyers, if you have any questions, our Customer Service staff will be very glad to help you. We try our best to reply to your emails as soon as possible, however, due to the high volume of daily incoming emails and time zone difference, we may not be able to reply to your emails immediately. Please contact me before you return it. Feedback is very important to us. For the functional products in our shop, we make sure that the functions are the same as the description. About the product colour:Because of the different light and environment when the product is photographed, In a few instances the colour of the product may have a little colour difference with the actual colour of the product, I hope you can understand.