This sturdy, heavy, and large mortar pestle is approximately 80 centimeters long and 11 centimeters in diameter. With a length of a full 80 centimeters, you can take advantage of gravity to pound the mochi from above. If the pestle is light or the head is small, it takes longer to pound the mochi properly. It's important to pound the mochi quickly while it's hot and soft. If it cools down, it hardens and becomes impossible to pound. This pestle is long and heavy, making it easy to pound, and is highly recommended.