Adapt Diverse Bike Frames, Women'S Bmx, And Non-Standard Frames With The Mobi Versatile Compatibility: This adapter bar is equipped with a telescopic tube, adapting diverse bike frames, including women's, BMX, and non-standard frames. And our bike adapter bar is designed for use with most mast-style hitch racks. Rapid installation on seat post and handlebar stem using hooks with quick release buttons on both ends of our bike adapter bar ensures a secure fit for various bikes. Distance Between Hooks: 18.90~27.56in (48~70cm). High Loading Capacity: By creating a top tube, our bike adapter bar allows your non-standard frame bike, including heavier e-bike, to securely mount onto a mast-style hitch rack, thanks to its 70 lbs loading capacity. Whether you're heading for a mountain bike trip or tackling challenging trails, our adapter bar allows you to focus on the journey without worrying about safety of your bike with the bike adapter bar. Utmost Security: MOBI OUTDOOR bike adapter bar features a locking nut, allowing you to confidently lock the tube at any desired length. With large 1.50in diameter tube and anti-rotation mechanism for enhanced stability, our bike adapter bar prevents unwanted movement during transport. Our bike rack crossbar adapter ensures a customized and stable fit for various bike frames. Built to Last: Our bicycle cross bar is crafted from robust 0.10in thick 6063 aluminum for exceptional durability, and the corrosion resistance enables our bike adapter bar to withstand all weather conditions, providing consistent performance during demanding heavy-duty use. Additionally, our bike adapter bar provides optimal strength without compromising on weight, making it perfect for cycling adventures. Scratch Protection: Our bike adapter bar features molded rubber hooks that gently cradle your seat post and handlebar stem. This feature of our bike adapter bar protects your bike against scratch, impact, and vibration throughout your entire journey. Additionally, our ebike adapter includes a 2-year warranty, providing you with added peace of mind and assurance for your investment.