- COMPATIBILITY: Designed specifically for Standard Oster Classic Duralast Blenders with a motor base opening of 3 3/8 inches. This replacement part fits models featuring a blade base outside diameter of 2 5/8 inches. Please note, it is not compatible with Pro, Master, or Versa models. - BLENDER JAR BASE REPLACEMENT: This high-quality Black Blender Jar Bottom Cap Base is a direct replacement for Part #4902. Its durable plastic gear and included gasket ensure that your ingredients stay securely contained within your glass or plastic jar while blending. - SILICONE RUBBER O-RING GASKET: Crafted from durable silicone rubber, this gasket offers excellent elasticity for a secure seal. The original gasket can deteriorate over time; this replacement ensures your blending process remains efficient and mess-free. - BLENDER REPLACEMENT BLADES: Featuring a premium Ice Crushing Blade that replaces original Part #4961, these sharp stainless steel blades are designed to tackle ice effortlessly while providing thorough blending of your ingredients. The blender’s motor alternates blade movement to effectively pull food and ice down, resulting in consistently smooth textures. Use this replacement for: - Preparing smoothies or frozen beverages that require ice crushing for the perfect consistency. - Whipping up soups or sauces that need finely blended ingredients. - Making your favorite dips or spreads while ensuring all components are smoothly blended together. This replacement kit combines quality materials and precision engineering to enhance the performance of your Oster blender, ensuring you get the best results for your culinary creations.