These red rubber stamps come mounted on cling foam so you can use them 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). This package contains an assortment of cling rubber stamps mounted on an 7x8.5 inch backing sheet. Design: Bubbles with Grid Block.