Professional Maple Tree Tapping Drill Bit 7/16" - Maple Syrup Making 7/16" Tapping Bit. Works for all 7/16" maple taps. Uncoated. You dont want that black coating in you or your trees. Very effective at removing wood chips. Don't blow into the tap hole! Clean cut tap holes stay open longer and produce much more sap! Even saves battery life on your drill since it cuts so effeciently.