- Compatible with 1.8 L jars. This accessory is designed to work with 1.8 liter containers for versatile use in your blending setup. - Material and construction: the black portion is a rubberized silicone material, paired with a polycarbonate plastic stopper. The overall design is round with lid flaps for easy access and secure closure. - Practical design features: the lid plug is clearly marked with measurements, making it simple to portion ingredients. The plug inserts into the lid and, when rotated clockwise, engages for tamper use or adding ingredients during blending. - Use scenarios: - Smoothies and blended drinks: add ingredients mid-blend or tamp thick mixtures without removing the lid. - Sauces, dressings, and dips: use the measurement marks to portion ingredients precisely while blending. - Meal prep and thick blends: control texture and ingredient flow by using the tamper function as needed. - Benefits: improves accuracy, keeps ingredients contained, and provides a convenient tamping option without extra tools, helping you achieve consistent results with your 1.8 L jar.