... polishing material is 304,316 spec: diameter is 33.7,40,42.450,60,70,80,100, stainless steel ... is 33.7,40,42.450,60,70,80,100,solid brass and stainless steel half ball end cap:finish: polished ... brassDecorative and functional rail end caps and finials complete your railing ... architectural metal railing project. Nice Round Steel Fence End Cap