Black A4 carbon paper with high durability, designed for single-sided writing and to prevent smudging. - Size: A4 (210x297mm) - Quantity: 4 sheets - Color: Black (BLACK) - Usage: Single-sided writing - Features: Zonal type, designed to prevent smudging - Durability: High durability, can be used repeatedly Thank you for viewing. I don't remember why I bought it (￣▽￣;) I bought it a few years ago, and it's unused and unopened. Please be sure to read the profile before purchasing.