Materials: Sodium bicarbonate, citric acid Size: 4*4.5 cm / 1.56"*1.76" Color: As shown in the picture 1. Using food-grade safety formula, it effectively dissolves scale, grease and coffee residue inside the coffee machine to protect your health. 2. Each cleaning tablet accurately mixes active ingredients, quickly foams and deeply cleans, restores the best performance of the coffee machine, and extends the life of the equipment. 3. Simple and easy to use, no need to disassemble the coffee machine parts, just put the cleaning tablet into the water to run the machine, saving time and effort to complete the cleaning efficiently. 4. Degradable formula, reducing the impact on the environment, and suitable for various brands and models of coffee machines, with strong versatility. 5. Independent packaging design, easy to carry and store, one tablet can achieve professional cleaning effect each time, economical and affordable. Package includes: Coffee Machine Cleaning Tablets*20pcs