Cherne 270040 Test-Ball Test Ball Plug, Pneumatic, 4 in Pipe, Ring and Chain Tether, Natural Rubber 00297549 they have a double hinge

they have a double hinge

Included Software Not Applicable

Line Volt Mechanical Tstat

Whichever is Greater Display Digital LCD Response Time 0

which means it will provide precise results every time

Cherne 270040 Test-Ball Test Ball Plug, Pneumatic, 4 in Pipe, Ring and Chain Tether, Natural Rubber 00297549 they have a double hingeTest Ball Plug, Air Connection Gender Male, Air Connection Type Tire Valve, Body Surface Style Textured, Deflated Diameter 3. 25 in, Deflated Length 6. 5 in, For Maximum Pipe Inside Diameter 4. 25 in, For Maximum Pipe Size 4 in, For Minimum Pipe Inside Diameter 3. 41 in, Head Tether Connection Ring and Chain Material Rubber For Use In DWV Systems to Seal Round and Out of Round Pipe Max. Back Pressure 30 ft of Head Type Pneumatic Required Inflation