MPI Tools brings you another must have Acme tap for your tool box. We made this tap to be Tandem so you get a roughing pass and a finishing pass in one go. This tap is made from M2 High Speed Steel. Its coated with Titanium Nitride to ensure longer wear times than uncoated products. There are 4 flutes to allow for more chip clearance. Choose your thread style above. We have Left and Right handed threads available. MPI Tools fully backs their products so if for any reason you aren't happy return it for a full refund or contact us through your order page for any technical questions.