DEBRADALE DESIGNS - 500 Color Bar Ruled 4" X 6" Index Cards - Standard 110# Index Card Stock - 50 Each Of Ten (10) Great Colors - 2 Shrunk Wrapped Packages Of 250 Cards - Perfect for AP Art History STANDARD 110# INDEX CARD STOCK. We Don't Believe In Flimsy Paper Being Sold As Index Cards. 10 UNIQUE AND VIVID COLORS. If You Are Going To Organize By Color We Think You Should Have More Choices Than Other Brands Provide. BUY MORE. . . SAVE MORE! Who Doesn't Like That Idea. 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 MADE IN THE USA WITH AMERICAN PAPER AND LABOR. Sure We Could Have These Manufactured In China or India And Sell Them For A Lot Less But That's Not The Brand Debra Dale Designs Was Created To Be. BEING ENVIRONMENTALLY RESPONSIBLE IS IMPORTANT. This Product Is Made Of Paper Containing 30% Post Consumer Waste And Is Green Seal Certified And Of Course It's Acid Free.