Formax FD 680 Continuous Forms Burster (Discontinued)Formax FD 680 High Volume Industrial Burster with Imprinter can process large bursting jobs at speeds up to 500 feet per minute while slitting, separating and stacking the forms. Standard features of the FD 680 include slitters, tractor feed, safety interlocks, cabinet and a conveyor unit. A power drop stacker can be added to enhance productivity