Grab handles (Tanfield Lea DH9)

I have three 'grab handles' to dispose of.
Two are identical and were previously fitted in a shower area. They are 24" long and are good strong handles with a ribbed grip. The plastic parts have yellowed slightly and, while they've been given a bit of a clean, they would benefit from a good scrub to remove some limescale stains.
The third is a metal handle, of the type usually fitted next to a doorway.