The Milwaukee String Trimmer w/ QUIK-LOK reaches full throttle in under 1 second and is part of the industry's most capable attachment system. The string trimmer is made up of two components – the Power Head w/ QUIK-LOK and the QUIK-LOK String Trimmer Attachment. This allows you to quickly swap out any of the 13 attachments on a single power head. The advanced electronic package also delivers instant throttle response, 3 speeds, and a variable speed trigger.