This is the only gutter hanger system we have for double bead half round gutters. A threaded rod or a bus bar hanger is also needed to fasten this gutter to the roof deck. The hanger simply slides over both beads of the half round gutter. A pair of pliers can be used to clamp the hanger down on the bead of the half round gutter. The threaded rod needs to be bent to the pitch of the roof.