DESCRIPTION Air testing U gauge kit containing all the items (except testing plugs) needed to carry out an air test to 4in/100 mm water gauge pressure on any size of drain or pipe. Kit contents are : - U Gauge, Hand Bellows Pump, 1/2in and 1in BSP Nipples Caps, Tee Piece. Three x 0.6m lengths of rubber hose. The kit is housed in a display box with full instructions.