Excellent featuresOster Replacement Set, Cup Base, Fits Most Oster Blender Jars. Save money by not having to buy a new Osterizer blender, or keep your old one working perfectly with the new blender cup and blender. Fits jars, plastic, glass and stainless steel. Refresh and revitalize the life of your Oster blender and add years to it. Keep your Oster blender working as well as the day you got it. Note: This is not an original Oster accessory, but a replacement.