Orion 5684 LaserMate Pro Laser Collimation Kit A precision laser collimation tool for precise alignment of reflector optical systems Hardened design offers lifetime laser alignment guarantee Works on any Newtonian reflector telescope or Dobsonian with a 1.25" focuser or adapter for use of 1.25" accessories Class 3R red laser, maximum output 5mW CAUTION: NEVER point at eyes, people, animals, vehicles. Avoid direct eye exposure