Porting Tool: 0.989" Spotface Dia, 3/8" Tube OD, Reamer, 9/16-18" Port MPN:42R-6

This porting tool's adjustable diameter feature enables precision sizing from a small spotface to a full size, making it versatile and suitable for various engines or muffler types. Its compact design simplifies accessibility, even in tight areas, while its stainless steel construction ensures durability during aggressive cutting or machining tasks. With easy-to-change cutting teeth options, users can swiftly transform the tool from a reamer to a cutter without switching tools, increasing productivity and reducing downtime. Automotive performance enthusiasts seeking to improve engine sound, airflow and fuel efficiency, as well as hobbyists involved in custom exhaust system modification, are ideal customers for this porting tool.