San Jamar Duett Standard Bath Tissue Dispenser SANR3500TBK Exclusive Infinity®System eliminates stub roll waste by preventing access to fresh roll until first roll is completely used. Holds two standard rolls up to 51/2 diameter and 15/8" core. Compact; fits any size washroom. Replaceable finger lock. Break-resistant plastic construction. Black Pearl. 71/2w x 7d x 123/4h.".