1/2 SUPER SPIRAL BURR

Great for pocket ports and Full ports!  does NOT work on cast iron or steel of any kind can leave a smooth finish at low speed very versatile  Made from Carbide not cheap steel that chips or bends easily this burr is for all skill levels Dave's Take: The 1/2 burr is my go-to for almost everything. I have multiple of these because I cut the two different lengths depending on how hard I am going to be porting, or if the runner is long or short. So, pocket port I would use a short 4 inch and a short turn I use the whole 6-inch length so I have the most leverage. I do this because the 6 inch will deflect when pushing really hard, and I am always pushing hard.  When doing a full port, I use the 3/4 to rough it out and then go over it with the 1/2 at full speed and then again at slow speed or switch to the 3/8 double cut burr for a smooth finish. Be sure to check out our useful YouTube tutorials on using these burrs!