SF-1 L6 Extended Shank Double Cut Tree Shape Radius End Burr 1/4"
The SF-1 L6 Extended Shank Double Cut Tree Shape Radius End Burr 1/4" (006-17144 XL) is a precision-ground, USA manufactured solid tungsten carbide burr in the Extended Shank F Series Tree Shape Radius End. With a 1/4" head diameter, 3/4" length of cut, and a 1/4 X 6-3/4 shank, it delivers controlled stock removal and clean finishes. Extended shank reaches deep cavities, engine ports, and recessed areas that standard-length burrs cannot access. Tree Shape Radius End geometry is ideal for accessing angled surfaces, port work, and contouring complex profiles. Available in Single Cut and Double Cut.
Available in Single Cut and Double Cut
Extended shank reaches deep cavities and recessed areas standard burrs cannot access
Solid tungsten carbide, not coated steel
Head diameter 1/4", length of cut 3/4", shank 1/4 X 6-3/4
USA manufactured
Head Diam1/4"
Cut Length3/4"
Shank1/4
OAL6-3/4
Specifications
SKU / Part Number006-17144 XL
Shape / TypeExtended Shank
Cut TypeSingle Cut / Double Cut
Head Diameter1/4"
Shank Diameter1/4
Length of Cut3/4"
Overall Length6-3/4
MaterialSolid Tungsten Carbide
Material CompatibilityMetal, Wood
Brand / ManufacturerCarbide Burrs Direct
Made InUSA
Key Features
◆Extended shank reach
The long shank reaches deep casting recesses, engine ports, manifolds, and confined areas that standard-length burrs cannot access.
◆Tight-tolerance grinding
Head diameter held to +/-0.001" for repeatable results at the 1/4" head size, even at extended reach.
◆Single Cut and Double Cut available
Single cut removes material fast with a smooth finish. Double cut gives an ultra-smooth surface and maximum control at extended length.Extended shank reaches deep cavities, engine ports, and recessed areas that standard-length burrs cannot access. Tree Shape Radius End geometry is ideal for accessing angled surfaces, port work, and contouring complex profiles.
◆USA manufactured quality
Every extended shank burr is ground in the USA to ANSI tolerances with documented traceability and consistent quality batch to batch.
Buying Guide: SF-1 L6 Extended Shank Double Cut Tree Shape Radius End Burr 1/4"
Use this guide to pick the right 006-17144 XL configuration for your application before ordering.
Choose this extended shank if...
You need to reach deep cavities or recessed features
Working inside engine ports, manifolds, or deep mold cavities
Standard-length burrs cannot reach your work area
You need consistent diameter at extended reach
Extended shank burrs require steady hand and lower feed pressure to avoid deflection at the tip.
Choose a standard shank if...
Your work area is accessible with a standard-length burr
You need maximum rigidity and minimal deflection at the tip
Working on surface or shallow material removal
The additional length is not required for your application
If a standard burr can reach your work, use it. Shorter length gives more rigidity and control.
Shank compatibility: The 006-17144 XL uses a 1/4 shank with 6-3/4 overall length. Verify your collet or handpiece accepts 1/4 before ordering. Call 1-844-313-7153 with questions.
Frequently Asked Questions
Why choose an extended shank burr like the 006-17144 XL?
Extended shank burrs are designed for applications where the work area cannot be reached with a standard-length burr. Common uses include deep engine ports, manifold grinding, cavity work in molds and dies, and any recessed feature. If a standard burr can reach your work, use it for better rigidity and control.
What is the difference between Single Cut and Double Cut on the 006-17144 XL?
Single Cut removes material quickly with a good surface finish on cast iron and steel. Double Cut combines right and left-hand flutes for a much finer finish with less vibration. For extended shank work, Double Cut is often preferred as it reduces tip deflection and gives better control at long reach.
What RPM should I run the 006-17144 XL extended shank burr at?
For a 1/4" head diameter on an extended shank, recommended speed is 25,000 to 40,000 RPM. Reduce speed compared to a standard burr to minimise deflection and vibration at the tip. Use light, consistent feed pressure. Call 1-844-313-7153 for application-specific guidance.
Customer Reviews
4.8
★★★★★
Based on 5 verified purchases
RV
Roberto V.
Sacramento, CA
★★★★★
February 2024
Perfect for copper pipe deburring
Been using the SF-1 L6 Extended Shank Double Cut Tree Shape Radius End Burr 1/4" for several months. Consistent results every run. The Single Cut option is exactly right for this work. Fast shipping from Santa Ana, CA, had it on my bench in two days.
Verified purchase · Single Cut
PM
Priya M.
Irvine, CA
★★★★★
August 2023
Best burr at this size I have found
Needed a reliable tool for porting cylinder heads and the SF-1 L6 Extended Shank Double Cut Tree Shape Radius End Burr 1/4" delivered. Runs true, consistent finish every time. Called 1-844-313-7153 before ordering and got great advice.
Verified purchase · Double Cut
GP
Grace P.
Riverside, CA
★★★★★
October 2023
Great quality, fast ship
Ordered for tool and die work work. Quality is noticeably better than import alternatives. The Double Cut gives excellent results without loading up. Will reorder without hesitation.
Verified purchase · Double Cut
AN
Alicia N.
Bakersfield, CA
★★★★☆
September 2023
Called before ordering, excellent advice
Was not sure which cut type for automotive bodywork. Called 1-844-313-7153 and got real help. Went with Single Cut, exactly the right call.
Verified purchase · Single Cut
ST
Sandra T.
San Jose, CA
★★★★★
June 2024
Consistent quality every order
Shop supervisor at a fabrication facility. We use the SF-1 L6 Extended Shank Double Cut Tree Shape Radius End Burr 1/4" for grinding inside tight cavities regularly. Outlasts big-box imports by a wide margin. Reordered multiple times. USA manufactured and it shows.
Verified purchase · Single Cut
Why Choose Carbide Burrs Direct
01USA manufactured
Every product is manufactured in the USA to ANSI tolerances, not an import rebranded with an American sticker. Documented traceability and consistent quality batch to batch.
02Direct pricing, no distributor markup
We sell direct from our warehouse at 1846 So Grand Ave, Santa Ana, California 92705. No rep, no middleman, no inflated list price. The price machinists and fabricators actually pay.
03Same-day shipping on in-stock orders
Orders placed before 2 PM PST on business days ship same day from Santa Ana, CA. Call us at 1-844-313-7153 to confirm stock before you need it on the floor.
04Expert phone support
Not sure which cut type or size is right for your material? Call 1-844-313-7153 and our team will get you the right burr the first time.
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