Cherne's Gripper plugs can be used in a variety of applications including DWV (drain, waste and vent) testing and stack testing. End-of-Pipe design won't fall in, whereas the Inside-of-Pipe design allows you to locate the plug inside the pipe as far as you need. Time tested, the Gripper remains one of the most popular mechanical plugs on the market.

Original Gripper Plug Features:

• Ideal for sewer testing and long-term applications
• Made with glass-reinforced ABS plastic
• End-of-pipe design seals only at the end of a pipe
• Inside-of-pipe design seals inside pipe as far as needed

Equipped with:

• Easy to install extra large zinc wing nuts won't rust
• Natural rubber o-ring
• Galvanized carriage bolt to prevent corrosion