This string trimmer attachment is compatible with the M18 FUEL Power Head and the QUIK-LOK Attachment System. It features an adjustable cutting swath of 14 to 16 inches. It has a bump feed system and a protected drive shaft to prevent damage from drops and storage elements. The attachment operates at up to 6,200 RPM and has a length of 36 1/4 inches. Up to 25 feet of trimmer line with a diameter of 0.080 or 0.095 inches can be loaded in under 30 seconds. This product weighs 3.75 pounds.