Powerfully and precisely washes ALL breast pump parts, including flanges, shields, collection cups, valves/membranes and storage bottles Fits pump parts from ALL types of breast pumps from any brand, including wearable pumps Two powerful spray arms with 21 high-pressure spray jets ensure thorough cleaning inside and out Full replacement rack system includes top rack, bottom rack and connecting tubes; Use in place of existing rack system that comes with the Baby Brezza Bottle Washer Pro Top rack fits up to 7 larger valves/membranes and features a basket for smaller valves/membranes; Bottom rack holds up to 4 flanges, shields, collection cups and storage bottles For optimal performance, ensure parts on the top rack are spread out evenly so the spray arm can effectively spin and clean BABY BREZZA MAKES PARENTING EASIER: We’ve delighted more than 10 million families globally with our game-changing products. That's why we're Moms’ #1 most trusted and recommended brand of baby feeding appliances