Making a custom greeting card or thank you card is now easy with the Cricut Insert Cards - Rainbow Scales Sampler (R10). Each pack contains 30 R40 Cards (10 of each color) in Green, Blue, Red; 30 Inserts in Holographic Scales and 30 White Envelopes for designing and then elegantly sending out your greetings, invites and note cards. You can just pick your design, load the inserts onto the cards on the Cricut Card Mat (sold separately), and use the Cricut Maker, Cricut Joy, or Cricut Explore machines to get your desired design on the card. With these holographic insert Cricut cards, you can cut out even the most intricate designs for your custom thank you cards, ceremony cards or invites. Also, these cards are completely glue-free, so no more sticky spots and no smudging from anywhere - just create custom cards neatly and quickly. Every time you craft a card you get an impeccable and flawless output. With the right Cricut Explore & Cricut Maker accessories (all sold separately), you can craft the most beautiful birthday card, thank you card, invitation cards, or any festive cards in a jiffy!