Orange Trimmer Line: Our trimmer string has a diameter of 0.155 inches and a length of 102 feet. The orange weed eater string’s bright color ensures precise cutting path tracking, reducing accidental turf damage. Commercial Grade Nylon Material: The weed trimmer line made for premium nylon polyamide material with high tensile strength and splinter resistance, which is durable. The upgraded trimmer line can also cut more efficiently than other lines. Round Weed Wacker String: The round string line is the most popular line shape with smooth cutting action, which is able to reduce vibration and operational noise. It is also more durable and longer lasting than square ones. Trimmer Line for Universal Replacement: The compatibility of our weedeater line is strong. The weed whacker string can be applied to a variety of trimmers. NOTE: Please confirm that your machine can use .155’’ line. Customer Service: We are happy to help you with any questions you may have. Please feel free to contact us if necessary. 155-1LB-Round