The Add a J Hook Jr's -specially made to fit thinner filters. Simply hook it on the back bottom of the filter between the baffles, and snap it into place. It is easily removable, making it a better solution than permanently mounted or clip on J hooks. It is made to fit 1-1/2" baffle filters like the ones from Cannonware. Pop them off for cleaning or to reuse on a new filter. Each set of 2 Add a J Hook Jr's fits one filter. Made of high quality 22G stainless steel and designed and produced in the USA.