Amazon.com : Alstar Alignment 1.25" Next Generation Laser Collimator for Newtonian Telescopes : Electronics
Amazon.com : Laser Collimator for Telescopes 1.25'' with 2" Adapter,7 Levels of Bright for Reflector Telescope Collimation- Collimate Lens Metal Material : Electronics
1.25 inch Laser Collimator with 2-inch Adapter for Mirror Reflector Telescopes | eBay