In 1999, Big Sky Precision started making quick-release axles for wheelchairs. Since then we have produced literally hundreds of thousands of these pins that allow for quick removal of wheels for transport, repair or exchange. Our most popular axles have integrated "hubcap" push buttons with custom laser engraving. These hubcaps are available in domed, spherical or flat and can be anodized any color. Shank materials are typically from 17-4 PH stainless. We also manufacture shanks from aluminum (for pediatric wheelchairs), titanium (ultra-light), and Vasco 300 for ultra-strength in rugby competitions and other extreme sports. We produce a ⅝”, bariatric version as well.