The Lifelong power Pro mixer grinder is a solid durable kitchen appliance for your everyday kitchen use. The jars are made of stainless steel, which along with giving it added strength also prevents rusting. The vacuum feet help the easy operation. It comes with three different stainless steel jars that allow versatile operations in the kitchen so that it can be used for multiple purposes. Don’t worry if you experience some burning smell when you run your mixer grinder for the 1st time .This is due to the motor varnish getting heated for the 1st time. The problem should not recur in subsequent uses. If it does, please contact the brand service center.