Welcome to Defender Canada! 
Description
If you are going directly to 19/32" (15 mm) pex tubing, this piece will make your life easier when installing a pull-out shower or recessed shower. The female 1/2" (12.7 mm) fitting on the faucet supply lines fits this adapter and the other end is a 19/32" (15 mm) male...
Scandvik Speedfit Fitting Item # 1140035
Description
If you are going directly to 19/32" (15 mm) pex tubing, this piece will make your life easier when installing a pull-out shower or recessed shower. The female 1/2" (12.7 mm) fitting on the faucet supply lines fits this adapter and the other end is a 19/32" (15 mm) male slip joint. The female 3/8" (9.5 mm) fitting on shower hoses fits this adapter and the other end is a 19/32" (15 mm) male slip joint.