Originally Posted by
chico1st
whoa i have no idea how those would work.
THey aren`t as complicated as that picture suggests. You just set the hook part over the bar the same way as you would with a plain hook, then rotate that little lever, which closes the hook around the bottom. No springs or anything- they just stay closed by friction and work very well. But as Bwgride commented, they only have one small mounting olt each. For big panniers like your kitty liter buckets, you might be better off with something stouter.