150mm spherical primary mirror with a 900mm focal length, perfect for enhancing your astronomical observations. Includes a 35mm elliptical secondary mirror, aluminum plated with a protective film for durability and performance. Ideal for DIY telescope projects, catering to astronomy enthusiasts looking to build or upgrade their telescope systems. Lightweight devise at approximately 800g, ensuring easy handling and installation in various telescope setups. Comprehensive package includes one primary mirror and one secondary mirror, providing essential components for your telescope assembly.