Cherne 262048 Muni Ball Test Ball Plug, 4 in Pipe, Pneumatic, Bypass, Rubber G7601377 The Milwaukee 48 22 0012 Compact Hack The Milwaukee 48 22 0012 Compact Hack Saw is the ideal tool for cutting metal Cable Features Hollow Core For Maximum Pipe Size 4 in Testing Maximum Back Pressure (Air) 22 psi Plug Seal Material Natural Rubber For Use On Sewers Bypass Connection Type NPT Head Tether Connection Eyebolt Includes Protective Sleeve No Inflation Fluid Air Contains Pressure Release Valve No Bypass Thread Gender Female Maximum Back Pressure (Water) 50 ft of head Restrictions This item is restricted for conveying or dispensing water for potable use (human consumption)