Materials: ABS , with excellent resistance and impacts resistance, ensuring the durability of the product in various weather conditions. Process: Using precisions injections molding process, the surfaces is smooth, and the installation is simple and convenient. Parameters: Suitable for most standard size drainage channels, can be easily connects and adjusted for optimal drainage. Size: compact design, suitable for use in small spaces, specific size can be customized according to needs. Package includes: 4pack Flexible Gutter Extension Nozzle