The Gripple system will support up to 100 kg / 220 lbs of load.
The nylon trellis wire is UV stabilised so it won't deteriorate in sunlight and will last for about 15 years. There is no metal at all, so nothing to rust!
The Gripple itself is made from nylon, which is reinforced with glass-fibre, and inside there is a ceramic gripping mechanism and stainless steel springs, so again, nothing can rust.
This makes it ideal for use both outdoors and indoors, especially in humid glasshouses.