Captain O-Ring Players Kit Large Color Coded Master Paintball Oring Kit - 18 Sizes 360 Orings - Walmart.com
Azodin Kaos Marker O-ring Kit [azodin_kaos] - $7.95 : Orings-Online, Your only source for O-rings!
Amazon.com: Polyurethane O-Rings, MAGT 10pcs 13.81.9mm High Strength Polyurethane O-Rings for Paintball Gun CO2 Air Tank (Beige) : Sports & Outdoors
Amazon.com: 100 Polyurethane CO2 / HPA Tank O-Rings (90 Durometer) [RED] - Replacement Urethane orings for Paintball co2 / high Pressure air Tanks : Sports & Outdoors