Everlast Laser D20T4.5 F800 Focus Lens AssemblyThe D20T4. 5 F800 Focus Lens Assembly is designed for laser cleaning applications such as rust removal, descaling and surface preparation. Manufactured from high quality optical quartz, this complete lens assembly includes both the lens cartridge and housing, making installation quick and convenient. Designed to focus laser energy accurately onto the work surface, the D20T4. 5 F800 lens helps maximise cleaning efficiency while maintaining consistent