Plastic Tubing Pun-Cm-6-Sw Standard O.D Tubing, for Qs Plug Connectors, Polyurethane (Not Approved for Use In theFood Industry) Antistatic. Outside Diameter=6 Mm, Bending Radius Relevant for Flow Rate=28 Mm, Inside Diameter=4 Mm, Min. Bending Radius=14 Mm, Tubing Characteristics=Suitable for Energy Chains In Applications with High Cycle Rates