This high-quality bike trailer attachment coupler is a great addition to your cycling gear. Designed to work with Instep and Schwinn bike trailers, it allows for easy attachment and detachment. The coupler is made by Titanker, a trusted brand known for their durable and reliable bike accessories. With package dimensions of 5.71x4.65x1.61 inches and a weight of only 0.31 pounds, this attachment coupler is lightweight and easy to transport. The sleek black color matches any bike and adds a stylish touch to your trailer setup. Perfect for cycling enthusiasts who want to bring their little ones or furry friends along for the ride.