This is a red laser Collimator with 1.25" fitting and a removable 2" adapter， Designed for accurate collimation (Optical alignment)of all Newtonian and Schmidt-Cassegrain reflector telescopes.
Specification: Brand new & high quality. Red laser collimation beam with 7 brightness levels. Can fit into 1.25" focusers or diagonals. Removable 2" adapter. Built with metal material. CR2032 Lithium cell battery(included). Wavelength 635-655nm. Output power: less than 1mw. Class II laser product. Weight: Laser Collimator81g， 2" Adapter sleeve54g Brand: Retevis. Color: Black Warning: Do not look directly into the laser beam! Permanent eye damage may result! Avoid prolonged skin exposure to laser rashes or burns may occur! | 
