Abstract: An elongate beading is provided for attaching a pool liner to a pool wall. The elongate beading comprises a substantially planar liner attachment portion having an outer surface for attachment to a pool liner and an inner surface, the outer surface for attachment to a pool liner. The elongate beading also comprises a hook portion having a pair of opposed first and second legs interconnected by a connector portion. The first leg, second leg and connector portion have inner surfaces defining a channel and the first leg is substantially coplanar with the liner attachment portion and the second leg has an outer surface including a downwardly facing shoulder formed therein.