Features:Concentrated super auto glass cleaner , than conventional glass water unique:1. 100% Brand new and high quality.2. 1 Piece add 2.5-4 liters of water.3. Performance efficient, a grain of 2.5-4 liter equals to general water wiper.4. Use convenient, rinse block and concentrated use.5. Somatotype small, portable with milk film general size.6. Concentrated car window glass cleaner.Specifications:Item Name: Effervescent TabletMaterial Type: concentrateItem Type: CleaningQuantity: 15PCSSingle piece size: about 2 x 1cmUse Methods:1. Open glass bottle cover , put into a grain of block concentrated.2. Fill up clear water ( recommended tap water ).3. Lid reset.Package Included:12pcs Car windscreen cleaning rinse block