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.