SPDs motorsport series of AN quick-connect fittings is developed for maximum reliability and to completely eliminate the risk of leakage. The fittings can be connected and disconnected quickly and easily without tools, saving valuable time during service, maintenance, and pit work. The quick-connect mechanism is engineered for the highest possible level of reliability. One half features machined locking lugs and guide pins that securely engage with the opposite half, which contains matching grooves with a mechanical positive-lock design. This means the AN fitting locks automatically when pushed together. To disconnect, both axial pressure and rotation are required simultaneously, completely preventing accidental separation. Many other quick-release AN fittings on the market use small locking balls as the retention mechanism. While this design may work initially, it often becomes unreliable when exposed to dust, dirt, or drying, which can prevent the balls from moving freely and lockin