***** **********Best Quality Guranteed. *****user adjustable laser collimator; allows anyone easily collimate 1.25 '' and 2'' reflector telescopes; come with removable 2" adapter; built with metal material; make alignment no longer boring and time consuming*****Easy to use; accurate collimation in a few minutes provide a more clearer image; no longer have to go back forth; just watch the collimator from the mirror end of the scope and adjust the screws*****7 brightness levels red laser beam; adjustable brightness; suit for different light conditions; amazing alignment in dark and day; so can get the better views possible from your reflector telescope*****High quality solid metal body; for a long term use; CR2032 battery included and comes with a full set of instructions with a step by step procedure on how to properly align a relfecting telescope*****Triple cemented of Lens; Improve the stability of red dot; Red laser with 7 brightness levels; Quick alignment; much faster than a manual collimator; It