Delta Centrifugal has a large inventory of molds in varying lengths to allow for specific customer requirements. Our shortest molds are roughly 30 inches long, then jumping up to approximately 80 inches long, and then around 100 inches long at the top end. However, we also have larger diameter molds that have the ability to produce up to approximately 30 inches in diameter with lengths as long as 270 inches. You aren't obligated to purchase a full mold length, however, the higher the quantity of a specific mold length you purchase, the less the price per inch becomes. For more questions, call 888-433-3100 to speak with our centrifugal casting experts or email us at sales@deltacentrifugal.com.