The Python Female Brass Adapter features 3/4" x 27 female thread, enabling you to connect your No Spill Clean and Fill System to newer faucets with smaller spout aseemblies. Install the adapter when needed, or leave it attached to your faucet for more frequest use. Attaches to the inside thread on the standard Python Brass Adapter (69HD). Solid brass construction ensures durability and long-term use. compatible with all Python No Spill Clean and Fill systems.