Abundant Quantity: You will receive 50 concentrated solid cleaning and washing tablets, a generous amount for your long-term needs, which you can also share with family or friends. Necessary and Convenient: One effervescent tablet with 4 liters of water will give you 4 liters of concentrated car windshield cleaning solution to clean and lubricate your windshield. This will reduce friction between the wipers and the glass and keep your car windshield clean and in good working order. Instructions for Use: Simply place one cleaning tablet in the wiper blade and pour in the appropriate amount of water. You can also dissolve the tablet in a small container, then pour the dissolved cleaning solution into the wiper blade and fill it with water for faster and deeper dissolution. Functional use: Our sturdy and practical glass wipers can be used to clean car windows, kitchens, windows, tiles, mirrors, etc. They are also suitable for removing stains in kitchens and on floors, bringing a touch of comfort to your environment.