HANGERWORLD20 Strong 41cm Metal 13 Gauge Silver Galvanised Wire Clothes Garment Trouser Bar Hangers

do these have a coating on them? I'm planning on making a water melon blender out of these... will the "silver" chip...or is it just metal?

Is there free shipping for a return if I am not pleased with hangers?

what are the dimentions of this coat hanger?

How easy is it to untwist these to use for emergency retrieval of things out of reach?