RINO-TUFF offers a wide variety of replacement trimmer heads and trimmer line designed to fit virtually any string trimmer on the market. All RINO-TUFF products undergo intensive R&D and testing to ensure the highest quality, performance, and durability. Starting at a best in value trimmer line for the price conscious customer to the PRO and PRO TWIST lines with 50% increased durability and up to 15% longer run time, RINO-TUFF has the DIY homeowner and lawn care professional covered. Replacement trimmer heads from RINO-TUFF are designed to either revitalize an existing trimmer with a worn out/broken head or for increased convenience and special applications. From bump knob style and fixed line heads for trimming/edging grass and weeds, to heavier duty bladed and hybrid heads, RINO-TUFF has what it takes to tackle nearly any grass, weed, or brush job around.