Ryobi Expand-It 18-Volt Lithium-Ion Cordless String Trimmer Power Head (Attachment Capable, Attachments, Battery and Charger NOT Included)

Simply connect an attachment accessory, such as the trimmer, pruner, pole saw, hedge trimmer, or many others, and then plug in any Ryobi 18V battery into this power head, and now you will be able to use any 18V battery to use your attachment tools! Yes, this attachment power head will work on the same attachments that you use for your 40V power head, or gas power head. They are all interchangeable. For example if you want to use this as a string trimmer, you have to have the trimmer attachment (or you can be purchase under asin B09W11BFSD). THIS POWER HEAD DOES NOT INCLUDE ANY ATTACHMENTS, AND DOES NOT INCLUDE A BATTERY OR CHARGER. Works with all Ryobi 18V batteries.