4 heads include: 3–blade heavy trimming head, 4–line trimming head, leaf blower head, and cultivator head for light duty tilling. Part of the Attach–A–Tool Interchangeable Trimmer Attachment System; fits 99% of all gas trimmers. Also includes 6 replacement trimmer blades, 4 replacement trimmer lines and storage box for all 4 attachments. U.S.A.