Yellow Jacket, a Ritchie Engineering Company, is a proud manufacturer of built in the USA Vacuum Pumps. The Yellow Jacket Bullet series is their economical line of vacuum pumps but that doesn’t mean they are cheaply made. These vacuum pumps are available in 3, 5, and 7 CFM Models depending on the size of the system you are looking to evacuate. They all feature a wide base with rubber legs to keep them in place during use.