The Bubbles stamp set is designed by Tim Holtz for Stampers Anonymous. This set includes a specialty gridblock due to the size of the stamp. Mounted on cling foam, these red rubber stamps can be used with any acrylic block (sold separately). Great for using with Tim's signature distressing techniques! Stamps come on a 3-hole punched sheet for easy storage in the Tim Holtz Stamp Storage Binder (also sold separately).