SJ-3 60° COUNTERSINK PREMIUM TUNGSTEN CARBIDE BURR– ¼” shank
SJ-3 60 degree burrs are great for sharp angle areas, countersinking, counterboring and chamfering bores with a 60 degree angle. Due to the extreme hardness of this tungsten carbide, it can be used on much more demanding jobs than HSS (High-Speed Steel). These carbide burrs are made of tungsten carbide burr die grinder bits and will start to soften at higher temperatures, so carbide is always the best choice for long-term performance.
Double cut or Cross cut carbide burrs tend to be used on ferrous and non-ferrous metals, soft steel, and also for all non-metal materials such as stone, plastics, hard wood, and ceramic. Double cut burrs will leave a slightly smoother finish than single cut due to producing smaller chips as they cut away the material. Use for medium stock removal, deburring, finishing, and cleaning. A double-cut carbide burr is the most popular cut and will see you through most applications.
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