Colette wrote:Um, how do these things work?

There is a collar on each side that slides over the grip.
The webbing attached to the left hand collar goes across and slides through the right hand collar and has a loop in it for a tie down hook.
The webbing attached to the right hand collar goes across and slides through the left hand collar and has a loop in it for a tie down hook.
So you sort of pull them apart, slide each collar over the bar then tie it down. There's a lot mor surface pulling on the grip so it doesn't damage them like using a tie down can.