Wider 3 inch roll: These rolls are thicker than traiditional 1.88" cores. The dimension of this tape measures at 3 inch wide x 60 yards long or (76mm x 55m). The diameter inside the core is 3”. Our tape is perfect for 3" wide tape dispenser guns or cut with scissors. 2.7 Mil thick which means it has the strength to make sure your boxes won't break open or come apart.