This gasket features a ridge or lip and is designed to be durable. Compatible with 600W and 900W NutriBullet Extractor Blades and Flat Milling Blades. These gaskets are intended for use with NutriBullet blenders that have a lip; they will not fit models without a lip. Replacement gaskets fit the NutriBullet 600W and 900W blender models, compatible with Extractor Blade, Flat Milling Blade, or any original lids. Replacement part for NutriBullet blenders. Lip design for NutriBullet blender. Replacement component for NutriBullet blender. Color: Gray Material: Plastic Size: Outside diameter: 4 inches; Inside diameter: 3.75 inches Package Contents: 4 x Durable gray gaskets Note: Not compatible with Nutri Ninja, NutriBullet RX, Magic Bullet, or Baby Bullet blenders. Package includes only the items listed; other products are not included. Please note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.