airtech's omega flow lines are for use under the bag in single and double bag resin infusion aplications, replacing spiral wrap polyurethane feeder lines. Omega flow lines incorporate an "omega section" internally to transport resin along the surface and into the part. Omega flow lines are made from translucent silicone rubber and are reusable. Airtech's Omega flow lines leave minimal or no mark off on the part when used in conjunction with airtech's flow media and release ply. product is recommended to be treated with compatible release to maximize lifespan.