Just what carbide burr
Carbide burrs are tools used for deburring, cutting, shaping, grinding, and chamfering hard materials. Different cuts of carbide burrs will probably be suitable for several materials.

Carbide burrs are used in air tools like die grinders, pneumatic rotary tools and high-speed engravers, Micro Motors, Pendant Drills, Flexible Shafts, and hobby rotary tools.

Why would you use Carbide burrs over HHS(high-speed steel)?
Carbide has an Very high heat tolerance allowing these to operate at higher speeds than similar HSS cutters, but still maintain their cutting edges. High-speed steel(HSS) burrs will quickly soften at higher temperatures while carbide Maintains hardness even under compression and possesses Longer working life and is also a better choice for lengthy term performance on account of higher wear resistance.

Single-Cut vs Double-Cut
Single cut Burrs are for General Purpose. It’ll give good material removal and smooth workpiece finishes.

Single cut is employed with stainless, hardened steel, copper, iron, and ferrous metals and will remove material quickly with a smooth finish. Can be used as Deburring, cleaning, milling, material removal or creating long chips

Double cut Burrs allow for rapid stock removal in harder materials and tougher applications. The designs reduces pulling action, allowing better operator control, and reduces chips

Double cut burrs are employed on ferrous and non-ferrous metals, aluminium, soft steel and for all non-metal materials like stone, plastics, hardwood, and ceramic. This cut has more cutting edges and can remove material faster.

Double-cut will leave a smoother finish than single-cut as a result of producing smaller chips while they cut away the material. Use double-cut for medium-light stock removal, deburring, fine finishing, cleaning, smooth finishes, and creating smaller chips. Double cut carbide burrs would be the hottest and benefit most applications.
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