General description Keep your Oster blender functioning like new with this Replacement Refresher Kit. This set includes essential accessories designed to fit most Oster blender jars, allowing you to save money by avoiding the purchase of a new blender. Revitalize your blender's performance and extend its lifespan with these high-quality replacement parts. Technical specifications Includes 2 Rubber Rings (O-Rings, Sealing Rings) Compatible with plastic, glass, and stainless steel jars Other information This is a replacement accessory, not an original Oster product.