Achieve Perfect Curves: Designed to bend thin-wall tubing, copper, and soft metals with precision (up to 180 degrees) without crimping or flattening the pipe. Versatile Size Compatibility: Fits five of the most common tubing sizes for daily use: 1/4", 5/16", 3/8", 1/2", and 5/8" outer diameter (O.D.). Premium Durable Construction: Made from oil-hardened and tempered spring steel with a zinc-plated finish. This ensures superior strength, longevity, and resistance to wear. Easy & Effective: The flared end allows for effortless tube insertion, and the spring reliably returns to its original shape after each use. Its zinc-plated finish resists rust and wipes clean easily, making it perfect for any project, indoors or out Tip for Best Results: For optimal bending, place one bender over the outside of the tube and a second bender inside the tube for extra support., Manufacturer: Wostore