Koolance HOS-13CL Tubing, PVC Clear, Dia: 13mm x 16mm (1/2in x 5/8in), Ea: 305mm (1ft) Koolance clear PVC with 13mm (1/2in) internal diameter, 16mm (5/8in) external diameter. Bend radius is approximately 55mm (2.2in). This tubing is priced per foot (305mm) and will be cut to the ordered length. Additional Specifications &bullet; Max Temperature: 70&deg;C (158&deg;F) &bullet; Max Pressure @ 25&deg;C: 4kgf/cm2 (57psi) .