Not all aluminum tubing is created equal. And not all types of aluminum tubing can be used for air compressor cylinder sleeves. A large number of our competitors use an inferior grade of aluminum and the wrong process of extrusion. On top of this, the sleeves need to go through the process of hardcoat anodizing. There is only one anodizing process that provides the superior ID smoothness and coverage that we demand in our sleeves. To obtain more information about our cylinder sleeves or to start a project with us click below.