NOTE: You must own a GO! Qube Mix & Match Set before adding the same-sized Companion Set. Pair these 4 dies with your GO! Qube 12" Mix and Match Block (55778) and GO! Qube 12" Companion Set-Angles (55791) and get 216 block designs to choose from! This set is all about the corners! Easily make the units by sewing Half Square Triangles onto the corners. Ideal for quilters of all skill levels but PERFECT for beginner quilters or new to Accuquilt. GO! Companion set - Corners includes: (4) GO! 10 x 10 Dies GO! Cutting Mat - 10" X 10" (55111) Getting Started DVD Pattern Book with 9 Block Patterns and 1 Quilt Pattern Self-contained Storage System Click on the link for Piece Parade Sampler Quilt using the Mix and Match Block Sets and Companion - Corners.