The 9" Companion Set is designed to expand the possibilities of what you can create with the existing GO! Qube 9" Mix & Match Block (55777). In fact, the original GO! Qube combined with the GO! Qube 9" Companion Set allows you to make an additional 72 amazing blocks! The 9" Companion Set includes four angled shapes labeled 13-16—a continuation of the 1-8 die numbering system from the GO! Qube 9" Mix & Match Block—a cutting mat, an instructional DVD.