Quick Connect Couplings Our vast line of pneumatic quick connect couplings are available in an extensive range of connection styles, sizes and materials. Our Quick Connect Couplings> Miniature One and Two Way Straight Thru One Way Industrial Interchange Series A (1/4" Body Size) Series B (3/8" Body Size) Series C (1/2" Body Size) Series D (3/4" Body Size) Replacement Parts (Series A, B, C, D) Additional Couplings ARO Series Lincoln Series Ring Lock Series Twist Lock Series Truflate Series Hydraulic Couplings Each hydraulic coupling series we offer comes in a variety of pressure ratings, seal types, sizes and materials to meet your precise hydraulic application needs. Our Hydraulic Couplings> Standard Hydraulic Coupling Styles Double Shut-Off ISO "A" Double Shut-Off ISO "B" Snap Tite Interchange Flush Face Series Straight Thru Interchange Mold Coolant Sockets Mold Coolant Plugs   Fittings We are your source for a full line of standard pneumatic fittings that can be manufactured in nickel, stainless steel or electroless nickel plating. Our Pneumatic Fittings> Pneumatic Fittings Push In Fitting Hose Barb Fitting Reusable Hose Fitting Tees, Elbows & Bulkhead Fittings