1, Probe CNC Precision Optical Digital Edge Finder Touch Point Sensor with LED and Beep is packed by plastic, aims to keep rust-proof. 2, Probe CNC Precision Optical Digital Edge Finder Touch Point Sensor with LED and Beep batches are packed by carbon box. 3, Carbon boxes Probe CNC Precision Optical Digital Edge Finder Touch Point Sensor with LED and Beep are packed by pallet, which is for shipment by sea or by air.