Complex metalworking tasks require the use of Porting Tools. With our dedicated range of Port Contour Cutters, you can enlarge a pre-drilled hole in complex shapes. They are a standard in both lathe and mill applications. The listed Porting Tools are all ground between centers to ensure tool concentricity. They are offered in a carbide-tipped variant with coolant holes added to the flutes. These Carbide-tipped Port Tools offer good strength and wear resistance on the cutting edge. It provides exceptional tool life & use on tough materials. Tolerances on the tool meet SAE & MS requirements. We offer these Porting Tools in three straight shank diameters of 1/2 inch, 3/4 inch, and 1 inch and 11 different port size 5/16 inch -20 to 1-7/8 inches -12. Make use of our filter selection search matrix to arrive at the best Porting Tool for your application.