Trixie Biker-Set Holder for Saddle bar - Connecting piece for bicycle set for dogs with bicycle attachment. Install the plastic cover over the saddle post. Please make sure the seat post is securely attached to the frame, otherwise it may turn if the dog makes a strong jerk. Attach the halves of the fastener to the plastic shroud and secure them with the supplied bolts and washers. Screw in the coil spring on the short side of the extension. Attach the extension to the clip that attaches to the bike. Please make sure the latch snaps into place. It is important to make sure that the bike kit is securely attached to the bike before using it for walking the dog, and that it will not move even if the animal pulls it hard. The extension can be removed by pressing the latch. The bike kit can only be used with bicycles. It is not allowed to be used with motorcycles or other power-driven vehicles. Never leave your dog unattended when attached to the Bicycle Kit. The bike kit is not suitable for walking small dogs or puppies. Please note that not every dog ??can be walked with a bike. Before using the bike kit, dog owners should carefully check whether the dog can withstand the physical exertion that occurs when walking a bike.