Designed with care. As far as nyjer tube feeders go, this is the ultimate. The “quick clean” base easily snaps off for convenient access and thorough cleaning. The brushed brass top pops out for filling, and then fits snugly back in place. The interior floor of the tube is raised with a “seed deflector” so birds can reach every seed. The Aspects Quick Clean Nyjer Tube comes with a lifetime guarantee from the manufacturer. 30cm tall x 9cm wide.