The Redline Detection ReadySmoke is a U.S.A.-made smoke machine designed to find leaks fast. The design is compact and fits securely in a toolbox drawer, the company says. The ReadySmoke is designed to be simple to operate and includes OEM approved vapor producing fluid which lasts hundreds of tests and is free of dyes and contaminants. It also has an easy-fill dipstick style fluid port to refill when needed.