TOPS Index Cards, 4 x 6-Inches, White, 90 Lb, Narrow Ruled, 100 Cards/Pack, Box of 10 Packs (62511) Perfect choice for organizing notes, numbers, business cards or mailing information 4 x 6 inch card size Narrow-ruled Heavy 90 pound white card stock Box of 10 packs (Total of 1,000 cards)