VP-78 Semi Matic Bump Feed. Designed for use by the casual user. Can be adapted to fit spindle unit trimmers offered by Ryobi, Ryan, IDC, Homelite, McCulloch and Weedeater along with many others. The user can load and remove line through the knob, never having to separate the cover Priced right for the box store customer for over the counter sales. Order 6 each for counter display box.