Efficient Cleaning: The basin is made of integral aluminum alloy die-casting, and the surface is smooth without gaps. The flushing head is made of stainless steel and ABS plastic, which can perfectly match your kitchen environment. Material: The basin part is made of a whole piece of aluminum alloy by compression molding, the surface is smooth and there are no gaps, and the high-pressure rinser head is made of stainless steel and ABS plastic. Fuction: When you only have one free hand available , removing milk and formula residue from narrow baby bottles can be difficult.Let this glass rinser remove residue in seconds with one simple push . Also , It is perfect for quickly rinsing your favorite barware , champagne flutes or wine glasses , with each use , the subtle overhang directs water flow into the kitche sink for easy cleanup, It is gentle on delicate drinkware and kitchen helper. Installation: Must have at least 2 inches of space surrounding installation hole and no more 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. And has a water supply line.The supplied water supply line can be connected to hot or cold water Simple to Handle: The Faucet Glass Washer Cleaner is simple to operate. Just turn the cup mouth down and gently press the bottom of the cup, now the pressure of tap water is used for cleaning. You can take off the cup When the cleaning is finished.