The product is a Kobalt Pre-Cut Trimmer Line, specifically designed for use with trimmers. This particular line is .080 inches in diameter and 16 feet in length, providing ample length for various trimming tasks. The open pack includes 4 unused portions of trimmer line, allowing users to easily replace their current line with this high-quality Kobalt product. Perfect for maintaining outdoor spaces, this trimmer line is a reliable choice for keeping yards and gardens neat and well-groomed.