The Green Level Caps  (aka. Montana caps )offer for Chicago spray paint an easy-to-understand identification system based on shape and color, giving an output of very skinny to super fat lines. The three skinny caps have an indented cap head and a black dot nozzle. The three fat Chicago spray paint caps have a rounded head and pink or orange dot nozzle. Cheapest Montana Spray paint is completed with these caps. Within both groups of skinny and fat caps, they range from narrow to wide spray widths based on the cap color - the green darkening as the spray width increases. The Green Level 1 Ultra Skinny Cap allows for an average spray width of .15" to .6". The Green Level 2 Fine Skinny Cap can produce lines from .25" to 1" and is great for fine work and fine fading. The Green Level 3 Skinny Cap can produce lines from .4" to 1.5" and is a good solid skinny cap for all products. The Green Level 4 Soft Fat Cap can produce lines from 1.2" to 4" and provides good fading for all products. The Green Level 5 Fat Cap allows for an average spray width of 1.5" to 6". The Green Level 6 Ultra Fat Cap can produce lines from 2" to 9.75". (All widths approximate.)

http://www.montana-cans.com/products/Cans/Montana_GOLD/Montana_GOLD_400ml/61