Elkhart Products 32824 1-Inch by 1-Inch by 3/4-Inch C X C X C Tee Fitting Tee Fitting Solder joint fitting ends made to receive Copper tube diameter 1-1/8 inch OD x 1-1/8 inch OD x 7/8 inch OD 1 inch x 1 inch x 3/4 inch