... . color: AB,SN,BSN,CR,etc. 3. finish: plating/ new shower curtain rod 1. specification: 13/16/19/20/25/28mm 2 ... , 6) Wall thickness: As customer request. curtain rail: 16mm/20mm shower curtain rods double curtain rods or extendable.curtain FINIALcurtain finial Material: Aluminum-alloy, zinc ...