ENHANCED IMAGE QUALITY - Integrated optical glass element maintains optimal image clarity and sharpness, ensuring high-quality results when using Pentax K lenses on Nikon cameras. PRECISE FIT AND DURABILITY - Crafted from high-quality brass and aluminum, this adapter ensures a secure and stable connection between your Pentax K lens and Nikon camera body for long-lasting use. VERSATILE COMPATIBILITY - Compatible with a wide range of Nikon camera models, including D3000, D5000, D7000, and D800 series, offering flexibility across different Nikon systems. MAINTAIN FOCAL LENGTH - Allows Pentax K lenses to be used on Nikon cameras while preserving the original focal length, providing consistent framing and perspective in your photography.