【Useful Cap Plugs】: Specially tapered cap plugs ensure a snug seal on all openings allowing you to perform an efficient leak test.
【30 Plug Sets】: Diameter size of cap plugs is ranges from 0.11" to 4.37" in diameter (2.95 mm to 111 mm), it fits most applications.
【High Quality Plastic】: Automotive cap plugs offers an ultra-durable construction & superior fitment, durable construction will withstand repeated use.
【Easy to Use】: These caps and plugs are used to seal the intake ducting leak of an automotive engine being tested. Easy installation and removal and 100% quality guarantee.
【Compatibility】: Works with ALL Automotive Vacuum Smoke Machines such as OTC, Redline, Autool and more.