Oatey Cherne 270288 8 Inch ABS Plastic Plumbing Inside of Pipe Gripper Plug

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 Plug is rated for 17 PSI or 40-feet of head pressure Zinc-Plated carriage bolt resists rust and corrosion End-of-pipe seals only at the end of a pipe, preventing plug from falling into stack. Inside of pipe seals inside pipe as far as needed. Ideal for plumbing system tests