OEM Cardinal Poly Business Card Refill Pages are designed for use with Cardinal EasyOpen Card File Binders and other letter-size binders. Each page holds 20 business cards front and back, ensuring your cards are organized and easily accessible. Made from PVC-free poly material, these pages will not stick to cards and are archival-safe, preventing any lifting or transferring of inks or toners. The seven-hole punched design allows for compatibility with both three-ring and seven-ring binders.