IPS® 83595 Twist-Tite™ Mechanical Test Plug With Screw and Zinc Nut, 4 in Pipe

Oversized wingnut with wrench pad for easy removal Made of high impact ABS material Will not rust or corrode Neoprene sealing gasket 5 psig maximum air back pressure Can be located as far as you need down the pipe 3.78 to 4.06 in dia pipe usage Steel plated screw