Seamless set of textures and configured shower head hose materials.

Textures 4k, 16 bit PNG and EXR 32 bit (for displacement)
2 versions - with displacement for close-up (first preview) and a lightweight version using Normal for far views (second preview).
There is a mask for the convex part, you can set different materials for the hollow and the convex, if necessary.

How to use:
assign material to spline,
set the thickness of the spline (on the preview, the thickness is 13 mm),
enable the "Generate mapping coords" checkbox in the spline settings,
adjust the texture tiling along the length of the hose to your liking,
assign Displacement if needed.

There are 2 cofigured examples in the scene, with displacement and lightweight version for far angles without displacement.

V-ray version: 4+
Corona renderer version: 7+