Vitamix Blender Accelerator Tamper Tool 64 OZ New Tool allows for processing thick, dense ingredients. Pushes food down into the Vitamix processing blades. Design not to come in contact with the blade. For use with standard 64 oz. containers, will not work with the 48 oz container. Not for use with the low profile 64 oz. containers found on the Pro 300 or Pro 750.