The bolt set for cat flaps from Karlie is a specially designed replacement part suitable for use with various models of Karlie cat doors. This set includes all the necessary components to ensure the functionality of your cat door and is ideal for models 507510, 507511, 507512, and 507513. Weighing 600 grams, the bolt set provides a robust and durable solution for the installation or replacement of parts of your cat door. The color scheme of blue, combined with a red accent, offers an appealing look that harmoniously fits into different living environments. The bolt set is a practical addition for cat owners who value a functional and reliable cat door. It allows your cats to safely and comfortably transition between indoor and outdoor areas while ensuring the security of your home.