Our M18™ FUEL™ QUIK-LOK™ string trimmer attachment is powered by the M18™ FUEL™ power head with QUIK-LOK™ and is compatible with our QUIK-LOK™ attachment system. The string trimmer attachment features an adjustable cutting swath 14 in for maximizing runtime and 16 in for maximizing clearing power and capacity. The string trimmer attachment utilizes the easy load trimmer head which provides you with an easy line loading experience and the ability to load up to 25 ft of trimmer line in under 30 s. The QUIK-LOK™ attachments feature protected drive shafts for increased durability against drops and storage elements. The string trimmer attachment also utilizes optimized gearing to manage the cordless M18™ FUEL™ power head RPM output specifically for string trimming applications. Milwaukee® M18 FUEL™ QUIK-LOK™ String Trimmer Attachment, For Use With: M18 FUEL™ Power Head with QUIK-LOK™, Specifications: 14 to 16 in Cutting Swath, 0 to 4900/0 to 6200 RPM, 0.080/0.095 in Dia Line, 36-1/4 in L x 13 in W x 9 in H Dimensions