Plastic Tubing Pan-4X0, 75-Si Standard O.D Tubing, for Qs Plug Connectors, Cn and Ck Polyamide Fittings (Not Approved for Use In theFood Industry) Outside Diameter=4 Mm, Bending Radius Relevant for Flow Rate=18 Mm, Inside Diameter=2, 9 Mm, Min. Bending Radius=12 Mm, Tubing Characteristics=Suitable for Energy Chains In Applications with High Cycle Rates