Want to share the bike trailer between different bikes? This heavy-duty coupler makes switching between mom's bike, dad's bike, or any bike super easy. Made from solid steel and iron, this thing is built to last through years of use without corroding or deforming. The safety pin design ensures once it's locked in place, it stays locked - no worrying about your precious cargo coming loose mid-ride. Installation is straightforward: just connect it to your trailer's towbar and you're ready to quickly attach and detach whenever needed. Perfect for child trailers, pet carriers, or cargo haulers, this universal adapter works with most bicycle models. At 3.15x2.17x0.98 inches and 160g, it's substantial enough to handle the weight but doesn't add noticeable bulk. When your kids get tired of pedaling their own bikes, you can easily tow them along safely. A must-have accessory for families who love biking together but need flexibility with which bike pulls the trailer.