This blue polyurethane tubing from SMC offers a nominal diameter of 1/2 inch and a generous length of 33 meters. Designed for pneumatic automation, it is a reliable component for various industrial applications.The SMC TIUB13BU-33 is a blue polyurethane tube with a nominal diameter of 1/2 inch and a total length of 33 meters. It is part of the TIU series of polyurethane tubing.