Vardhman Stainless Steel Pony Needle Set, Green These are Silicon Stamps which can be used on Fabric , Paper , Wood , by Means of Poster or Fabric Colors. These Are Improved Version of our Old Age Wooden Blocks which we Earlier used for Block Printing . Are Easily Washable and are Long Life. Using a transparent stamp allows for precise positioning, place onto an acrylic block and ink up your stamp using an ink pad simply peel these stamps from the plastic backing and pop them onto an acrylic block , this clear stamp sticks right onto the block! Pick out your ink pads and gently press this stamp against it. Then just pop it onto your crafts.