Glass Holder Railing 1. Material:AISI304/AISI316 2. Surface:Satin/Mirror Finish 3. For tube:33.7,42.4,48.3mm,1.5", 2" Glass Holder Railing 1. Material: AISI304/AISI3162. Surface: Satin/Mirror Finish3. For tube: 33.7,42.4,48.3mm,1.5" and 2"4. Usage: using at the end of tube for decoration.