Package includes 1 collimator and 1 eyepiece adapter. Features: Color is black, with 7 levels of brightness adjustment. Made of zinc alloy material, power is 5mw, powered by 2030 battery, size is 13.50X5.00X5.00cm/5.31X1.97X1.97 inch. Adopts power saving design with low consumption, durable for long time use. Produced with precision to enhance stable characteristics and high reliability. Supports 7 levels of brightness adjustment, comes with eyepiece adapter that can transfer 1.25 inch to 2 inch thread. Helps achieve accurate collimation of telescope quickly and easily. Only when the optics are accurately collimated can the telescope deliver its full performance. Designed for reflector telescopes, fits standard 1.25 inch diameter, this sturdy unit allows swift and precise collimation of Newtonian telescopes.

What's in the box
1 x Eyepiece Collimator Adapter