EXCELLENT ROBUSTNESS: This screw set is made of high quality rubber. It is very tough and not easy to break. NOT EASY TO ROLLING: This portable screw set is made of rubber, it does not rust. EASY INSTALLATION: This screw is equipped with installation instructions, and its installation steps are simple. You can quickly install it by yourself. PREMIUM MATERIAL: The screw set is made of high quality rubber, which ensures maximum durability. Specification: Condition: 100% brand new Material: POM + NBR Rubber Screw Length: Approx. 100mm / 3.9in Screw Rod Thickness: Approx. 10mm / 0.4in Notice : The screws need to be used together, and 1 toilet needs 2 screws (a pair) Note: other items are not included, the color is based on the first picture and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due manual measurement. Please allow deviation. Thanks!