It is very easy to Use, Wide enough to wash out cups of all sizes without sticking your hand inside the glass. Put down the mouth of the cup, press the bottom of the cup lightly then the water will take away the residues you can't reach. After the cup cleaned, please remove the cup and stop spraying water.
No plumber is required. The installation tools and required accessories are provided. Must have at least 2 inches of space surrounding installation hole and no more far away than 2.25 inches from center of hole to the sink's edge - ensuring water flow goes into the sink instead of pooling onto your countertop
