Perfect for a bachelor party, work outing, reunions, start up club etc. All of the markers are in good working order and have been cleaned and oiled. They also have new front and rear o-rings, along with a new ball latch detent. The smaller tanks all have new o-rings but all are expired and need to be hydro tested. However, they have been working just fine. The larger 20# fill tank can fill all of the included tanks and when empty simply exchange it at any Airgas location for about $60. The masks are color coded based on condition where green=great/good, yellow=decent/ok, red=for parts only. The lot comes with 3 1/2 cases of sealed paintballs but they are older. Also included are barrel squeegees, wrench tools, and red and blue team armbands.