Description Our Anderson Pens Exclusive Vacumatic Pellet Pusher Tool. Used for inserting a new Vacumatic diaphragm into the filling unit. Use the line at the end of the tool as a measuring device to cut your diaphragm and then use that side to easily invert the diaphragm before inserting. Once you use this, you'll wonder why you did it any other way! We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.