Glazing Bead

Looking for an equivalent bead. The bottom leg that touches the side of the pane is 3/8, this has a small amount of adhesive where it touches the side of the pane. the slanted back of the dome is also 3/8, this part touches the front side of the glass. The window pane is 1/2 wide. snaps in place. the dome has a small straight lip on the edge where it snaps into the frame. prefer brown but can make any color work. replacing the dual pane glass panels. thank you.