Silver 4" x 4"DIY Creative Big Size Flower Shape Scratch-off Label Stickers - Self Peel & Stick Label Stickers - for Schools Teacher Stickers Games & Promotions or Incentives Machine Compatib

While the size is wonderful and the sticker is nice, they do not scratch off with anything less than a razor blade! I wanted my grandchildren to be able to use them with a coin but that is impossible. I am very sad and disappointed with this purchase.