🔧 Connect with Confidence! Crafted from high-quality brass and plastic for long-lasting performance. Quick push-to-connect mechanism for hassle-free setup and takedown. Engineered with a robust extruder gasket to ensure a tight seal. Weighing only 30g, it's designed for efficiency without bulk. Perfectly connects Bowden extruders to 4mm PTFE tubes. 4mm internal diameter M6 thread precision Pack of 10 for value The LUTER PC4-M6 Pneumatic Air Straight Quick Fitting is a pack of 10 precision connectors designed for seamless integration with 3D printers. Featuring a durable brass and plastic construction, these fittings ensure leak-proof connections for Bowden extruders and PTFE tubes with a 4mm diameter. Easy to install and lightweight, they are the perfect solution for any 3D printing enthusiast looking to enhance their setup.