BoreSighter Bore Sight kit for 0.22 to 0.50 Caliber Rifles Handgun Red Laser Caution: Avoid direct eye exposure to beam; Fits any .22 to .50 caliber rifles, handguns, and scopes; Allows for quick and accurate resetting of any sights (iron, optical, laser, holographic, etc) Windage and elevation adjustable; Long sighting range; Light weight and durable; Tools, four adapters, and extra batteries (six in total) all included Max. Output Power less than 5mW; Classified in Class 3R; Weight 38g; Material Aluminum; Length 155 mm; Length of rod that fits in the barrel: 60mm - 90mm (tapered) Head Diameter: 16mm; Tail Diameter: 5mm; Laser wavelength 635-655nm; Laser Color Red; Power 3x AG13 batteries Included: 1 x Laser bore (with battery compartment);1 x Screwdriver;1 x Spare screw;1 x hex key;4 x Adjustable Adapter;1 x Padded storage box;3 x batteries