Includes 4 red laser cartridges: 7mm Rem Mag, 30-06, .308 Win, .223 Rem; Includes soft carry case and 12 Batteries (4 sets of 3 batteries); Cartridges made from aluminum, except the .223 cartridge which is made from brass; With these 4 laser cartridges, you can bore sight up to 20 different calibers; .30-06 works with these chambers: 25-06 Rem, .270 Win, .35 Whelen; .308 Win works with these chambers: .243 Win, .260 Rem, 7.62x51 NATO, .358 Win, 7mm-08; .223 Rem works with these chambers: 5.56x45 NATO; Red Laser: 635-655nm, Max output