USA supplier, 50+ years
Solid tungsten carbide rotary files in single and double cut, ground in our own American shop and stocked in every shape, head size and shank length. Buy direct, skip the distributor markup and get burrs that hold an edge shift after shift.
Shop favourites
The items American shops reorder most, priced direct from the manufacturer.
Shop by category
Every burr we sell sits in one of these ranges. Pick a category to jump straight to the sizes, shapes and cut styles in stock.
Carbide Burrs Standard & double cut 
Aluma-Cut For metal cutting 
Extended Shank Long reach burrs 
Xo Cut Stainless & exotic metals 
Iron Cut Cast iron, extended shank 
Drag Cut Porting burrs 
Krazy Kut Aggressive stock removal 
Flex Shaft Flex shaft burrs 
Burr Kits & Displays Ready made sets 
Dental Lab Precision lab burrs 
Equine Dental Horse dental burrs 
Sculpture Carving & texture 
Miniature 1/8" shank 
Shank Extension's 1/4" collet Shop by shape
The shape decides the cut. Pick the profile that matches your job and jump to the sizes in stock.
SAA CylindricalFlat sides, no end cut 
SBB CylindricalFlat-face grinding 
SCC Radius endContours and fillets 
SDD BallConcave cuts, hollowing 
SEE OvalBlending and shaping 
SFF Tree radiusRounded edge work 
SGG Tree pointedTight corners, detail 
SHH FlameWeld cleanup, ports 
SJJ TaperDeburring, V-grooves 
SKK TaperChamfers, edge work 
SLL Cone radiusTaper with soft tip 
SMM Cone pointedAngles and V grooves 
SNN Inverted coneUndercuts, chamfers FREE SHIPPING
ORDERS OVER $100
$100 Min. Purchase
PROMO CODE : Air
FREE AIR TOOL
$150+ Spend
BURR RESHARPENING
PROFESSIONAL SERVICE
Extend Tool Life
Most viewed products
Explore the carbide burrs and kits getting the most attention from American shops, selected for precision, durability, and everyday shop work.
1/2" Diameter x 1" Length of Cut with 1/4" x 6" Shank (7" O.A.L.)
Head Diam 1/2 Length of Cut 1 Shank Diameter 1/4X2 Available in
3/8" Diameter Ball Shape with Double cut.. Flexible shank Carbid
1/2" Diameter x 1" Length of Cut with 1/4" x 6" Shank (7" O.A.L.)
Series #2 Burr Extension System Body; 9'' OAL X 1/4'' Shank X 7/1
Air Micro Grinder 1/8" Pneumatic Micro Air Pencil Die Grinder Pol
5/8" Diameter x 1" Length of Cut with 1/4" x 6" Shank (7" O.A.L.)
Head Diam. 1/2 : Length of Cut 1-1/4 : Shank Diameter 1/4 X 2
Head Diameter 5/8" x 1" Flute Length x 1/4" x 6" Shank 7" O.A.L.
Head Diam 3/8 Length of Cut 5/8 Shank Diameter 1/4X6-3/4 Also av
1/4" x 3/4" Length of Cut (Tree Radius End Shape) with length opt
Head Diam. 1 : Length of Cut 1 : Shank Diameter 1/4 X 2Available
Choose your cut
Flute geometry changes everything: how fast you remove material, what the chip looks like and how much finishing you have left to do.
A right hand spiral flute that bites hard and clears long chips. Built for rapid stock removal with an excellent surface finish.
Right and left hand flutes combined to produce super smooth finishes. The slight left hand cutting action gives excellent control of the burr and the grinder.
Made to your drawing
Send us the print and we will grind it. Our CNC grinders produce virtually any carbide round tool, from a one off special profile to a full production run, with the same American carbide we put in our stock burrs.
No minimum order on specials. Most quotes come back within one business day.
Why Burrs4Less
We are not a reseller. The same shop that answers your call grinds the tool, which is why the price is lower and the spec is exactly what you ordered.
Over 50 years of American carbide grinding, with consistent grades and repeatable geometry batch after batch.
Hardness that holds an edge far longer than high speed steel and will not soften when the cut heats up.
Eleven head profiles across two shank diameters and four shank lengths, so you replace like for like.
Call and speak to someone who knows what happens when you run a double cut burr at the wrong RPM.
Application guide
A quick reference for cut style and speed. Never overspeed your die grinder, and let the flute do the work rather than pushing the tool.
| Material | Cut style | Typical speed | Suggested shapes |
|---|---|---|---|
| Stainless and hardened steel | Double cut | 25,000 to 35,000 RPM | A, C, G, M |
| Mild steel and cast iron | Double cut | 20,000 to 30,000 RPM | A, D, F, N |
| Aluminium and non ferrous | Aluma cut | 15,000 to 25,000 RPM | C, D, H, L |
| Copper, brass, bronze | Single cut | 18,000 to 28,000 RPM | A, E, L |
| Gold, silver, platinum | Double cut | 10,000 to 20,000 RPM | D, E, G |
| Stone, ceramic, porcelain | Double cut | 15,000 to 25,000 RPM | D, G, M |
| Hardwood and acrylic | Double cut | 10,000 to 20,000 RPM | F, H, N |
| Fibreglass and reinforced plastic | Double cut | 10,000 to 18,000 RPM | A, C, D |
Who we supply
Carbide burrs earn their keep anywhere material has to come off cleanly and accurately, from engine ports to crown preparations.
Customer feedback
★★★★★The quality of these burrs is exceptional. They last much longer than others I've used in the past.
★★★★★Fast shipping and great customer service. I've been a loyal customer for years and highly recommend Burrs4Less.
★★★★★The extended shank burrs are perfect for my detailed work. Great products at competitive prices.
★★★★★The carbide burrs from Burrs4Less have significantly improved our production efficiency. Their durability is unmatched.
★★★★★Burrs4Less provides an extensive range of products that cater to our diverse machining needs. Their prompt delivery ensures our operations run smoothly.
★★★★★The SD-1 is incredibly sharp and durable. Perfect for detailed work on both metal and wood.
Questions
Single cut burrs have a right hand spiral flute for general purpose use on cast iron, steel, copper and brass alloys, designed for rapid stock removal and good surface finishes. Double cut burrs combine right and left hand flutes to produce super smooth finishes, and the slight left hand cutting action gives excellent control of the burr and grinder.
Tungsten carbide burrs cut steel, aluminium, cast iron, stone, ceramic, porcelain, hardwood, acrylic, fibreglass and reinforced plastics. On soft metals such as gold, platinum and silver they last a very long time without breaking or chipping.
Yes. Burrs are supplied with 1/8" and 1/4" shanks and fit most air and electric die grinders, flexible shafts and CNC rotary tools.
Consider the material and the finish you need. Cylindrical and radius end burrs suit flat faces and fillets, ball and oval burrs suit concave work, tree and cone burrs reach tight corners, and inverted cone burrs cut undercuts and chamfers.
Yes. Our grinding machines produce virtually any carbide round tool, including end mills, drills and plastic cutters or routers. You can specify flute count, helix from 0 to 60 degrees, and point styles such as taper, split point, 2, 4 or 6 facet, delta, S-point and M-point.
Never overspeed your die grinder, as this reduces burr lifespan. Make sure the burr is securely mounted, keep your pressure consistent for a clean finish and keep the tool moving rather than dwelling in one spot.
Carbide knowledge
Practical guidance on picking, running and getting more life out of your rotary tooling.
