No Required: Simply press the edge of your glass or cup against the star-shaped base to connect the nozzleMuti-Function: The rinser could be shut down once you take off the glass. Four powerful water spraying hole, provide multi-dimension cleaningWidely Used: A perfect tool for your bar, restaurant, pub, household, coffee shop, milk tea shop, etcSuitable for many types and sizes of glass/cup, such as red wine cup, beer cup, coffee cup, milk cup, beverage cup, tea cup, etcEnergy Conservation: Water saving ability is up to more than 70%, also won't freeze your hand in winterThe water will spray 360 Degree to clean the interior and exterior clearly and stop automatically when cup is moved . Perfect washing performance with cold water it will not break the glass and could clean the lipstick and other dirt easily and clearly.Specification:Washing : High pressure washingMounting Hole Size: 22mm / 0.87inWeight: Approx. 283g / 10 ozType: -1990Colour: SilverMaterial: stainless steel + brassSize: 110 x 75mmPackage Contents:1 x glass rinserOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.