Cherne® I-Series Test Ball Plugs are designed with the superior expansion range and small deflated diameters

There is also a reaming feature for easy deburring of pipe

The 1/4" NPT pressure gauge has a center back mount and offers a pressure range of 0 to 160 PSI

2 1/2" base extension

Plastic or Steel Plumbing Connections

150#25"GAR/DR EXT SPRING SILVER-W/SAFETY CABLE FUSE RECEPTACLES Cherne® I-Series Test Ball PlugsThis heavy duty (10,000 cycles) extension springs have double loop ends for extra durability. 5 sizes will replace most all spring configurations on residential doors that are no higher than 7 ft. tall. 1 8 in. galvanized carbon steel aircraft cable; installed through springs to prevent injury in case of breaking.