Super Styrene C Channel These 330mm (13 inch) rods are available in a variety of sizes: 412-51/3: 1.50mm x 0.75mm x 330mm (0.060\" x 0.030\" x 13\") 4 12-52/3: 2.00mm x 1.00mm x 330mm (0.080\" x 0.040\" x 13\") 4 12-53/3: 2.50mm x 1.25mm x 330mm (0.100\" x 0.050\" x 13\") 4 12-54/3: 3.00mm x 1.50mm x 330mm (0.120\" x 0.060\" x 13\") 4 12-55/3: 4.00mm x 2.00mm x 330mm (0.156\" x 0.080\" x 13\") 4 12-56/3: 5.00mm x 2.50mm x 330mm (0.197\" x 0.100\" x 13\") 4 12-57/3: 6.00mm x 3.00mm x 330mm (0.236\" x 0.118\" x 13\") 4 12-58/3: 8.00mm x 4.00mm x 330mm (0.312\" x 0.156\" x 13\") 4 12-59/3: 10.00mm x 5.00mm x 330mm (0.394\" x 0.197\" x 13\")