EZARC Tungsten Carbide Rotary Burr Set, 5PCS Double Cut, 1/4-Inch Shank

The EZARCTools 5-Piece Tungsten Carbide Rotary Burr Set provides dedicated metal-shaping accessories for fabricators and machinists working with tough materials like steel and cast iron. Designed for use in electric and pneumatic tools, this set tackles grinding, deburring, and carving tasks where standard steel bits might dull quickly. Each piece features a 1/4-inch shank diameter, a 1/2-inch cutter diameter, a 1-inch cut length, and a total length of 2-3/4 inches.

Crafted from YG6 tungsten carbide with a 90 HRA hardness rating, these burrs deliver strong wear resistance during heavy-duty cutting. The double cut tooth geometry creates multiple cutting edges that clear away stock rapidly while reducing material loading. This pattern also gives you steadier handling over your work piece, resulting in a cleaner surface finish without producing dust pollution.

The kit covers five distinct bit shapes: SA-5 (cylinder), SC-5 (cylindrical radius end), SD-5 (ball), SE-5 (oval), and SF-5 (tree shape radius end). Having these varied contours on hand allows you to navigate flat surfaces, carve curved grooves, and work into tight corners. Everything arrives organized inside a sturdy aluminum alloy case that shields the cutting flutes from damage in your toolbox.

To achieve reliable results, these burrs require high operating speeds between 25,000 and 50,000 rpm, meaning they are not suited for standard low-speed drills. Proper operation also demands that you secure the tool firmly and use a reverse milling cut technique rather than back-and-forth reciprocating motions.

Verdict: This set is an excellent addition for metalworkers and mechanics who own high-speed die grinders and need durable, wear-resistant shaping bits. If you regularly grind steel or cast iron and want five core shapes in a solid protective case, it is well worth adding to your workshop.

• Piece Count: 5 pieces (SA-5, SC-5, SD-5, SE-5, SF-5)
• Material: YG6 Tungsten Carbide (90 HRA)
• Cut Type: Double Cut
• Shank Diameter: 1/4 inch
• Cutter Diameter: 1/2 inch
• Length of Cut: 1 inch
• Total Length: 2-3/4 inches
• Recommended Operating Speed: 25,000 to 50,000 rpm
• Included Storage: Aluminum alloy case

A great fit if you:

• Use pneumatic or electric die grinders running between 25,000 and 50,000 rpm.
• Regularly shape, grind, or deburr hard metals like steel and cast iron.
• Need a variety of head shapes, including ball, oval, tree, and cylinder profiles.
• Prefer keeping your rotary accessories organized in a rigid metal case.

Consider something else if you:

• Only have standard low-speed power drills that cannot reach 25,000 rpm.
• Require burrs with shank sizes other than 1/4 inch.

What materials can these burr bits cut?
They are suitable for working with a variety of materials, including hard metals such as steel and cast iron.

What operating speed should be used with this set?
These burrs are intended for high-speed use on electric or pneumatic tools, generally running between 25,000 and 50,000 rpm.

What bit shapes are included in the package?
The set includes five double cut shapes: cylinder (SA-5), cylindrical radius end (SC-5), ball (SD-5), oval (SE-5), and tree shape radius end (SF-5).

What are the physical dimensions of each burr?
Each bit measures 2-3/4 inches in total length, with a 1/4-inch shank diameter, a 1/2-inch cutter diameter, and a 1-inch cutting length.