Twist it to form the shape of your imagination. This snake cube ruler can be transformed into many shapes. More than 300 different shapes, 26 English letters, 10 Arabic numbers and many more can be formed using your brain. This snake puzzle is designed for people who love to solve complex task and has imaginary power. The uniqueness of this kit is that it changes from straight line to a ball,dog,snake,cat,duck,Mountains, Cross Etc.