Rubber Plug with Valve for 1-1/2 Inch Pipe and 1-3/4 Inch Fitting, with Blow Thru Valve Features stainless steel bolts and washers and large plastic wing-nuts. #9 Winter Plug with Valve for 1-1/2 Inch Pipe and 1-3/4 Inch Fitting, with Blow Thru Valve Includes blow through fitting to assist with blowing out or winterizing pipe.