Cherne® 4" Gripper Mechanical Plug

• Designed to test drain, vent and waste systems to 17 PSI backpressure
• Extra large zinc wing nut for ease of tightening. No wrench required
• Natural rubber O-ring for excellent expansion and memory
• ABS glass-reinforced plates for added strength
• Made of rust and corrosion resistant materials

Specifications:
Width: 4"
Depth: 4"