Recently, Troop Contracting purchased equipment to allow us to perform our own skilled concrete cutting/boring. The top of the line new equipment is the Hilti DD 250, with 16" core bit, water collector, and DD AF-CA Bluetooth Autofeed Unit. The Autofeed unit allows the user to maintain the status and operation of the coring unit without physically advancing the bit, the unit monitors it's own progress and advances automatically. This decreases the amount of labor to maintain the advancement of work. The Bluetooth capability allows the Site Superintendent to view the status of the operation from a phone app.