The 36V (18V X2) LXT® Brushless Multi Function Power Head (XUX01, sold separately) is a powerful and versatile solution for a range of landscaping applications. Get the right accessory for use with the XUX01, including the Protector (457273-0, for use with the String Trimmer Attachment EM450MP, sold separately). Consult the Instruction Manual for correct use of the String Trimmer Attachment and Protector.