Dixon Air King AC1 Air Hose Fitting, Steel Standard Safety Clip, 5/64" Wire Diameter (Pack of 25): Universal Hose Fittings: Amazon.com: Industrial & Scientific
SP390 Dixon Valve 10' and 12' Type B (Bauer Style) Quick Connect Fitting Accessory - Safety Clip - Galvanized Steel for 3.72
AC1 Dixon Valve Steel Air King Standard Safety Clip - .080 Wire Diameter (Pack of 25) for 5.79