Dust Hose Conversion for the B2 edger - This is the unit that comes with the new B2 edger. You can upgrade your old B2 (old tie on bag style) to the new style by adding this on your edger. It allows you to attach a vacuum to your edger for better dust pickup or you can use their new bag with zipper (included).  This also allows you to swivel the bag for easier use while you are edging.