These live swivels are similar to the N2280-BR series, but feature a internal spring bend restrictor to helps reduce kinking, collapsing, cuts in the tube, and premature delamination failures near the hose ends during hot water washdown. The springs are SS304 and tack welded onto the hose barb. NOTE: 'External' bend restrictors or sleeves that go over the cover of the hose may result in hidden bacteria buildup - hence why internal bend restrictors may be preferred.