DEBRADALE DESIGNS - Unruled Thick Index Cards Blank - 4 x 6 Inches - White - 500 Cards - 5 Packages of 100 - Extra Heavy 140# Index Card Stock - 253 GSM - .0118 Thick 4" x 6" 140# BRIGHT WHITE SMOOTH FINISH INDEX. The Heaviest Weight Index Card Stock that we can buy. Suitable for long term use with any type of pen, pencil or marker. Check out our 200# Tag Card Stock if you need even more thickness. MADE IN THE U.S.A. High quality and precision cut from paper also sourced in the USA. Rest assured that your index cards will be suitable for any purpose. 500 - PLENTY OF CARDS FOR MULTIPLE USES. Can be used for flash cards, note taking or recipe cards. RECYCLED PAPER. Paper contains post consumer recycled content. These cards are the ecology friendly choice. BUY MORE. . . SAVE MORE ON YOUR FIRST ORDER! Use The Following Codes At Checkout. Code IYRS3PTD To Save $5 When Buying 2 Items - Code 8XOPHJLZ To Save $10 When Buying 5 Items - Code P6YJEHT8 To Save $20 When Buying 10 Items