This Waring CAC138 Blade 48 oz. stainless steel container serves as a replacement for the one that came with your Waring BB300 series bar blender. For a boost in your operation's efficiency, an extra jar can be kept on hand so that you can blend varying ingredients without having to wash an individual container between blending cycles. It includes a complete cutting assembly with an industrial grade stainless steel blade as well as a lid that fits snugly with the container to prevent leaks during operation.