12 Pcs 6mm to 12mm Pneumatic Straight Reducing Push Connect Adapter, Quick Release Reducer Fittings for Air Compressor and Systems

【Specifications】12‑piece set of straight pneumatic connectors. Sizes: 4‑6mm, 4‑8mm, 6‑8mm, 6‑12mm, and 8‑12mm. Allows reduction from larger to smaller tube diameters and conversion between metric sizes. 【Composite Material】The reducing fittings combine nylon collets, high‑strength plastic bodies, polyethylene sealing rings, and stainless steel release springs. This hybrid design resists oil, moisture, temperature fluctuations, and corrosion, ensuring a long service life in demanding pneumatic systems. 【Straight‑Through Design】The straight adapters provide an unobstructed path for compressed air or fluids. The internal bore smoothly transitions between different diameters, minimizing pressure drop and turbulence. 【Push‑to‑Connect Design】Each fitting features a push‑in collet for plug‑and‑play operation. Simply push the tube in for an instant airtight seal; pull the release ring to disconnect. No tools, no thread sealant, no heating required. 【Wide Compatibility】Designed for PU, PA, and PE tubes, these straight reducing push‑to‑connect fittings work seamlessly with cylinders, valves, manifolds, compressors, and pneumatic tools.