Features: Secure and Sturdy: Our bird cage perch clamps and screws ensure easy and secure installation, keeping your bird& 39;s perch in place. Convenient Installation: Our tools set allows for easy installation, making it a breeze to set up and secure your bird cage. Durable and Reliable: Our bird cage perches and accessories are made with sturdy materials, ensuring long-lasting use and reliability. Versatile: These screws can secure your bird cage feeder, breeding box, perch and food bowls, and it& 39;s very convenient to install these tools. Intimate Service: If you have any questions about our products, please feel free to let us know. We will provide you with quality service. Specifications: Material: Zinc alloy Size: Clamp: 30mm Screw: 49.5*4.9mm Bolt: 4.5mm Drill: 75*4mm 16 * Clamps 8 * Screws 8 * Bolts 1 * Drill