Used to calibrate Earthway Commercial and Professional spreaders to the recommended rate of application as specified by the fertilizer manufacturer on the bag.

The Earthway 77016 Bag Calibrator features: Fits these spreaders: 2150, 2150SU, 2150T, 2170, 2170PRO, 2170SU, 2170T, 2170TSU, C22HD, C22HDS, C22HDSSU, C22HDSU, C24HD, C24HDS, C24HDSSU, C24HDSU, C25HD & C25HDS Earthway Number - 77016