Not all double enders are created equal. Halcyon uses only stainless steel products made from 316 stainless steel. You will see “316SS” stamped into the product. This grade of stainless steel has a high amount of chromium and nickel as well as molybdenum which results in a high degree of corrosion resistance. Importantly, the springs are also made from stainless steel so they will not rust through and render your double ender useless. We offer them in two sizes for different hand sizes and applications. You will be interested to know that we hand test each double ender for ease of use and return those to the manufacturer that do not meet our standards.