Our HVAC Copper Kit Includes 13 High-Quality Copper Fittings, Including (2)Copper 3/8" x 3/8" x 90 Degree Elbow Fittings (2) Copper 3/8" x 3/8" x 90 Degree Street Elbow Fittings (2) Copper 3/8 x 3/8 couplings (1) 3/4 x 3/4 45 degree fitting (2) Copper 3/4" x 3/4" x 90 Degree Elbow Fitting (2) Copper 3/4" x 3/4" 90 Degree Street Elbow Fitting (2) Copper Coupling 3/4" x 3/4 Our HVAC Copper Fittings set is a versatile kit designed for use with both split and central air conditioning systems. This set is perfect for both residential and commercial HVAC-R installations. With a universal fit, they can be used with a wide range of HVAC systems Backed with a 10-year warranty, you can trust that these fittings are built to last. Plus, we offer a hassle-free warranty to ensure your satisfaction with your purchase. This is a great kit to use with your split or central air conditioner Line Set. These are the exact same fittings that the pros use to install new air conditioning systems that fit all A/C condensers and Evaporator Coils. These are heavy-duty quality and are made to last. The copper tubing is thicker than what you will find from other suppliers. This set contains the following items: (2)Copper 3/8" x 3/8" x 90 Degree Elbow Fittings (2) Copper 3/8" x 3/8" x 90 Degree Street Elbow Fittings (2) Copper 3/8 x 3/8 couplings (1) 3/4 x 3/4 45 degree fitting (2) Copper 3/4" x 3/4" x 90 Degree Elbow Fitting (2) Copper 3/4" x 3/4" 90 Degree Street Elbow Fitting (2) Copper Coupling 3/4" x 3/4