ALLSCARE IS A FACTORY AUTHORIZED DISTRIBUTOR FOR ALL OF THESE CYLINDERS, SO YOU KNOW OUR PRICES ARE GREAT! We only offer the best! All of our air cylinders are made of 304 stainless steel tubes, and aluminum heads standard. Corrosion resistant stainless steel rods are standard on all bores up to and including 1-1/2”bore. All cylinders are factory pre-lubricated, for use with or without added lubrication. You have your choice of twelve bore sizes, 5/16” thru 3”, with many standard strokes. Custom strokes are available as well. Please contact our customer service department for more information on specials.