Quick fasten and release control bar bungee device.
Simply wrap the bungee cord around the control bar and upright strut as many times as you wish, pull the bungee through the clip and pull down to lock.
The control bar is firmly secured and won't move plus you won't wrap your knuckles as you do with the bungee and ball type fastener.
100% more effective than the velcro on the upright as the control bar will not slide.
Removal is simply pulling up the bungee to release.
I have 3 remaining and have used this type of fastener for years.
6 including UK mainland postage