In order to attach the part to an existing hose without removing the clamped nylon lock at the end, cut the model in half along the Z axis before slicing. The ribs will let you zip tie the part around the hose for an easy install! Make sure to place the original rubber gasket at the bottom of the threads to seal the connection, and you're ready to go. There's no need for glue or silicone as long as the shower head is tightened down onto the gasket. Enjoy!