90 Degree Quick Joint Coupler Fittings, 1/2 Inch Brass Thread, 20mm x 19mm Note: This product page is only selling the 20mm x 19mm size. If you need other sizes/colors, please refer to the Questions & Answers section. Description: 90-degree brass L-shaped quick joint coupler fittings. Industrial threaded adapter with a thickened, full copper core. The adapter is inserted inside the hose, so the outer diameter of the adapter equals the inner diameter of the hose. Suitable for water pipes, plumbing adapters and fittings, etc. Thread outer diameter: 4 points (G1/2 inch 20mm). Adapter outer diameter: 8mm, 10mm, 12mm, 14mm, 16mm, 19mm (optional). Package includes: 1 piece brass garden hose adapter. Note: The color may be slightly different due to different monitors. The above size is measured by hand, please allow for slight differences. Thank you!