Features: This product is used in automobile windscreen and the daily cleaning of all kinds of glass products. Function: Clean and decontaminate, reduce the friction between the wiper and the glass, and protect it. Concentrated super auto glass is cleaner than conventional glass water unique. Strong cleaning capacity. Small size, convenient to carry. Performance efficient,a grain of 4 liter equals to general water wiper. Instructions for use: This product is suitable for more than zero degrees Celsius. Open the hood of the car, find the windshield washer tank, fill the tank with water, add a windshield wiper (if the glass is too dirty, it is recommended to add 2 units). Wait 5 minutes and use it normally. A conventional piece of water can be changed with 4L of water. According to the normal volume of the liquid storage tank, it is a piece of water, which can replace and be superior to traditional glass water. Notes: This product should be stored in a dry place to avoid contact with children. Do not swallow it! This product can not be used for antifreeze glass water. Only the cleaning function has no antifreeze function Specifications: Condition: Brand New Material: Sodium bicarbonate Main ingredients: sodium bicarbonate, citric acid, surfactant, detersive active enzyme, polymer lubricant. Delivery instructions: small pieces send express, big pieces go logistics. Weight: (10pcs) Approx.33g/1.2oz Package List: 10 * Solid Effervescent Tablets