"Rusty O" wrote in message
ink.net...
Hayn has just introduced a rigging insulator that has a 'failsafe'
feature.

Failsafe isolators already exist for, what, 100 years? The famous ceramic
egg-isolator does just that. See
http://www.sijambo.com/zeilen/gabber...achterstag.jpg
for a modern plastic variant.

Meindert