4 colors are shipped randomlyfeature:1. One tablet per month to prevent odors.2. Made of 100% strong enzyme, it can effectively decompose and digest organic sediments and fats.3. Keep the drainage system used in the kitchen, bathroom and utilities clean to eliminate odors and blockages.4. Keep pipes and septic tanks safe.Product specifications:Quantity: 12 piecesColor: blue, yellow, orange, purpleLeave msg with the color you need.Size: 10 cm / 3.94 inches eachnote:1, due to manual measurements, different measurement methods and tools, there may be slight dimensional deviation.2, after long-distance cross-border transportation, there will be some rest time. this is normal phenomenon. Please understand and thank you