The spherical design enables seamless transitioning from coarse to fine finishes, smooth surfaces and precise results in all woodworking tasks Ideal for woodworkers, carvers, and DIYer enthusiasts seeking professional tools for detailed sculpting and shaping projects with reliabled Crafted from carbon steel, these burrs maintain sharpness during extended use, withstand up to 12, 000RPM, and aggressive 360 degree cutting for efficient materials removal Perfect for wood carving applications such as hollowing, contouring, and creating bowls, sculptures, or intricate curves in both dry and wet environments, thanks to the graduated sizes for progressive detailing This 3 piece spherical rotary burr set features universally 5 / 8 " 11 threads for direct attachment to 4.5 " and 5 " angled grinders, eliminating the need for adapters and ensuring vibrations less operations at high speeds, Manufacturer: ERRORY