Is one of the bits good for making a Flat bottom ?

Yes, the cylindrical shapes burrs in the kit can make a flat bottom.

Can these 1/4 inch shank burrs be inserted into the 1/4 inch collect of Milwaukee M12 easily?

Our 1/4 inch shank burrs can be inserted into rotary tool's 1/4 inch collect easily, Such as Milwaukee,Ingersoll Rand,DEWALT,Makita,etc.

does it provide any clear info what each bit is for? i wouldn't know which is for wood, plastic, metal, etc.

There are no instructions at all. I am a retired tool & die maker. I use them for working on metal. These will work on any kind of metal including hardened steel. You don't need carbide for wood or plastics but these will work on them. You will need to clean them frequently. I don't recommend using these for gems as one person enquired about. Gems are harder than hardened steel and most are harder than carbide tools.

Does this work on stainless steel and mild steel?

My set worked great on mild steel and should work as well on stainless steel.

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Sworker 8Pcs Carbide Burr Set 1/4 Shank w/Clear Box Max Head Dia 12mm Die Grinder Bits Rotary Tools Attachment Kit Rasp Accessories Metal Wood Stone Steel Grinding Deburring Cutting Porting Carving

Sworker 8Pcs Carbide Burr Set 1/4 Shank w/Clear Box Max Head Dia 12mm Die Grinder Bits Rotary Tools Attachment Kit Rasp Accessories Metal Wood Stone Steel Grinding Deburring Cutting Porting Carving

Product ID: 464170850

Details

Cutting Angle String
15 degrees
Cutting Diameter
6 millimeters
Finish Type
Uncoated
Material
Head/Tunsten
Shank Type
Straight

📏1/4 inch shank fits top rotary tools

⚙️8 tungsten carbide burrs, ultra-durable

🛠️Double cut for finer finish & less chip size

S$78

Duties & taxes included

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Description

🛠️ Elevate your craft with precision burrs that mean business!

COMPACT ORGANIZED - Clear clamshell box keeps your set visible and ready, perfect for on-the-go pros.
PRECISION MEETS POWER - 8 ultra-sharp carbide burrs engineered for aggressive, clean cuts across metal, wood, stone, and more.
UNIVERSAL COMPATIBILITY - 1/4" shank fits all major die grinders like DeWALT, Milwaukee, Makita—no tool left behind.
FINER FINISH LESS WASTE - Double-cut design reduces chip size for smoother results and less cleanup time.
VIBRATION REDUCED CONTROL - Ergonomic design minimizes noise and vibration, letting you work longer with precision and comfort.

The Sworker 8Pcs Carbide Burr Set features 8 tungsten carbide bits with 1/4" shanks, compatible with leading die grinders. Designed for versatile use on metal, wood, stone, and more, its double-cut burrs deliver finer finishes with less chip debris. Packaged in a clear clamshell box with a detailed manual, this durable set offers vibration-reduced control and a 5-year returnless warranty, making it a must-have for professionals seeking precision and efficiency.

Specifications

ASIN	B0B12QV98L
Best Sellers Rank	#98,817 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #196 in Cutting Burrs
Brand Name	Sworker
Customer Reviews	4.6 4.6 out of 5 stars (607)
Cutting Angle String	15 degrees
Cutting Diameter	6 millimeters
Finish Types	Uncoated
Included Components	8 pcs 1/4" XXL burrs, 1 slotted plastic clamshell box, 1 manual and 1 paper box.
Item Dimensions	4.02 x 3.13 x 0.57 inches
Manufacturer	Sworker
Material Type	Head/Tunsten Carbide
Minimum Bore Diameter	0.63 inches
Model	CBS-A8
Number of Flutes	2
Number of Pieces	8
Part Number	CBS-A8
Point Style	Taper Point
Set Name	8-Piece XXL Carbide Burr Set
Shank Type	Straight Cylindrical
Surface Recommendation	Metal Wood Steel Stone
Tool Flute Type	Spiral
UPC	787022948823
Unit Count	8 Count
Warranty Description	5-Year Returnless Replacement

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