The Rock-a-Blocks by Crafter\'s Companion are an innovative and unique rubber stamp mounting system designed to make stamping easy. Time to throw away those acrylic blocks! With Rock-a-Blocks, you\'ll get perfect results every time you stamp.Rock-a-Blocks have a curved face and an innovative depth gauge which means that when you stamp, the pressure applied to the paper is even, ensuring a consistent application of ink. All you need to do is apply a gentle rocking action to Rock-a-Blocks and you\'ll get perfect stamped impressions every time.The Rock-a-Blocks are packaged in a set of four including 6in x 4in, 6in x 1.5in, 4in x 3in, and 1in x 1in so they will work with many different rubber stamp sizes.Features & Benefits Get perfect rubber stamping results every time Suitable for a wide variety of stamp dimensions