Wide enough to wash out cups of all sizes without sticking your hand inside the glass. Fast and efficient to clean and rinse out large latte cups, baby bottles, wine glasses, sports bottles, tall glasses with a skinny neck, cocktail shakers, mason jars, mugs, etc.
Great home improvement and upgrade plumbing gadget: Satisfaction to pressing the item down on the actuator and feeling the blast of water. Definitely going to be on the list of things that changed routine! Great value glass rinser at a fraction of the cost of competing models.