Esselte Pendaflex Corporation Products - Index Card, 8 Point, Grid, 3"x5", 100-Pack, White - Sold as 1 PK - Grid Style Index Cards are ideal for making math flash cards or noting formulas and computations. Cards are rotary cut for uniform height and printed with a 1/4" grid pattern on one side, blank on the other. Offers an 8 point thickness and 90 lb. basis weight. Grid-ruled index cards. Commercial quality card stock. Quality engineered for uniform size. Commercial quality card stock.