Super Styrene Round Tube These 330mm (13 inch) tubes are available in a variety of diameters: 419-51/3: 2.00mm x 1.00mm x 330mm (0.080\" x 0.040\" x 13\") 419-52/3: 3.00mm x 1.00mm x 330mm (0.118\" x 0.040\" x 13\") 419-53/3: 3.00mm x 2.00mm x 330mm (0.118\" x 0.080\" x 13\") 419-54/3: 4.00mm x 2.00mm x 330mm (0.156\" x 0.080\" x 13\") 419-55/3: 4.00mm x 3.00mm x 330mm (0.156\" x 0.118\" x 13\") 419-56/3: 5.00mm x 3.00mm x 330mm (0.197\" x 0.118\" x 13\") 419-57/3: 5.00mm x 4.00mm x 330mm (0.197\" x 0.156\" x 13\") 419-58/3: 6.00mm x 4.00mm x 330mm (0.236\" x 0.156\" x 13\") 419-59/3: 6.00mm x 5.00mm x 330mm (0.236\" x 0.197\" x 13\") 419-60/3: 7.00mm x 5.00mm x 330mm (0.275\" x 0.197\" x 13\") 419-61/3: 7.00mm x 6.00mm x 330mm (0.275\" x 0.236\" x 13\") 419-62/3: 8.00mm x 6.00mm x 330mm (0.312\" x 0.236\" x 13\") 419-63/3: 8.00mm x 7.00mm x 330mm (0.312\" x 0.275\" x 13\") 419-64/3: 9.00mm x 7.00mm x 330mm (0.354\" x 0.275\" x 13\") 419-65/3: 9.00mm x 8.00mm x 330mm (0.354\" x 0.312\" x 13\") 419-66/3: 10.00mm x 8.00mm x 330mm (0.394\" x 0.312\" x 13\") 419-67/3: 12.00mm x 10.00mm x 330mm (0.472\" x 0.394\" x 13\") 419-68/3: 14.00mm x 12.00mm x 330mm (0.550\" x 0.472\" x 13\") 419-69/3: 16.00mm x 14.00mm x 330mm (0.624\" x 0.550\" x 13\") 419-70/3: 18.00mm x 16.00mm x 330mm (0.708\" x 0.624\" x 13\") 419-71/3: 20.00mm x 18.00mm x 330mm (0.788\" x 0.708\" x 13\")