High-flexibility, professional-grade AIRMIXS Polyurethane (PU) pneumatic tubing wound on a durable plastic spool for effortless dispensing. Specifically engineered with a precise $6\text{ mm}$ outer diameter and a $4\text{ mm}$ inner diameter, this hose guarantees a highly reliable, leak-free connection with standard $6\text{ mm}$ one-touch push-in fittings. Offering an exceptional bend radius without kinking, high elastic memory, and superior abrasion resistance, it is optimal for dynamic automated machinery, pneumatic control cabinets, and robotic air systems.