You can easily make rice balls of the same size as long as you shake it with rice.Use it for balls for school lunch everyday and this is a much more efficient No rice sticking to your fingers, and it's easy to clean. It was definitely worth the money Material: food grade pp,easily for washing This kit is for making rice balls. You just put rice into 3 compartments, not to much, and close the cover and shake. It is so fun and you will be amazed by the cute little rice balls in front of you! Mold Size: 7.1*2.8in (18*7cm) Mini Rice Paddle Size: 5.5*1.8in (14*4.5cm)