• 3 Tab adapter with Expandable O-Ring for GM, Chevrolet, Cadillac, Pontiac, Daewoo and Mazda vehicles. Expandable O-Ring ensures a leak-free seal. 1.22 - 1.42 Inch Diameter. • Fits Domestic & Import Master Cylinder Reservoirs • 360 Degree Swivel Typical Automotive Style Air Hose Nipple • Expandable O-Ring for a Leak-Free Seal • Aluminum Body • Color Coded • Anodized for corrosion resistance • Brake Fluid Compatible Rubber (EPDM) • O-Ring expanding wing knob • Designed for Pressure Brake Bleeders • Easy Grip Caps • Designed to work with Automotive type quick coupler
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