Keep this extra Blender Jar around in the event your other one comes up missing or broken, or better still, in case you're throwing a party and are in need of two jars - one for margaritas, one for smoothies. A 5-cup capacity jar, it fits the Waring Bar Blender and is heat-proof and dishwasher safe. Add in powders, fruit or other ingredients through the secure lid opening - even while the machine is running. The stopper also doubles as a measuring device.