Captain O-Ring Players Kit Large Color Coded Master Paintball Oring Kit - 18 Sizes 360 Orings O-rings are color coded by size, eliminating the headache of matching up sizes. This 360 piece Players Kit LRG contains 18 of the most common sized o-rings found in paintball equipment (20 of each size) Keep the o-rings on hand to replace seals in a variety of paintball equipment including your marker, to your air/CO2 tank, and other accessories requiring o-rings. Kit includes o-rings sorted by size/color in individual compartments.