Features: Craft from quality solid brass, antirust, anticorrosion, wear-resistant, solid and reliable Each brass connector outer diameter: 23mm/0.91in, inner diameter:21mm//0.83in, connect 20-21tap. (Please confirm your faucet size before purchasing) The wide compatibility designs can solve the problem that the water pipe can not be used with the faucet; the rubber gasket is firmly installed in the adapter, completely preventing water leakage when using, very reliable No complicated installation step or additional tool are required for the water fittings. Simply insert the end of the faucet into the grooves and screw the top to secures it. It can be plugged in or pulled out at any time Specifications: Component:Brass Size:Approx.2.30x 3.2cm/0.9x1.25inch Suitable for Internal Thread of 21mm and External Thread of 23mm Basin Faucets; Package Includes: 2pcs Tap Connectors note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.