what material can each type bit be used with? There's no documentation for a beginner user.

I have successfully tested these on aluminum, wood, acrylic, brass, and copper

are the spiral bits spiralup or spiraldown? thanks.

By the picture they look like they are UP CUT bits.

Can I use 1/4" shanks in the machine?

I haven't personally used a 1/4" shank, but I have seen people who claim this is possible.

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Genmitsu 40pcs End Mills CNC Router Bits, 1/8" Shank CNC Cutter Milling Carving Bit Set Including 2-Flute Flat Nose & Ball Nose End Mill, Nano Blue Coat & Titanium Coat CNC Bits, MC40A

Genmitsu 40pcs End Mills CNC Router Bits, 1/8" Shank CNC Cutter Milling Carving Bit Set Including 2-Flute Flat Nose & Ball Nose End Mill, Nano Blue Coat & Titanium Coat CNC Bits, MC40A

Product ID: 222215981

Details

Cutting diameter
3 Millimetres
Cutting length
17 Millimetres
Finish type
TiAlN AlTiN
Material
Tungsten Steel
Number of flutes
2

📏Precision 1/8" (3.175mm) shank & 17mm cutting length

🔥Nano Blue & Titanium coating for heat resistance

⚙️0.2μm ultra-fine tungsten carbide

€ 88.69

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Description

⚡ Elevate your CNC game with precision that lasts and cuts like a pro!

MATERIAL MASTERY - Effortlessly cuts plastics, aluminum, circuit boards, wood, and precision parts.
DUAL COATING POWER - Nano Blue and Titanium coatings ensure superior sharpness and heat resistance.
UNMATCHED DURABILITY - Cut continuously for 800 minutes with ultra-fine tungsten carbide steel alloy.
PRECISION ENGINEERING - Exact 1/8" shank and 17mm cutting length for flawless milling and carving.
VERSATILE COMPATIBILITY - Fits most desktop and industrial CNC machines, including Genmitsu 3018 series.

The Genmitsu MC40A 40-piece CNC router bit set features ultra-fine 0.2μm tungsten carbide construction with advanced Nano Blue and Titanium coatings for exceptional durability and heat resistance. Designed with a precise 1/8" shank and 17mm cutting length, this set includes 2-flute flat nose and ball nose end mills compatible with most desktop and industrial CNC machines. Ideal for cutting plastics, aluminum, circuit boards, wood, and other precision materials, it delivers professional-grade results with extended tool life.

Specifications

ASIN	B08CD99PWL
Best Sellers Rank	6,626 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 1 in Ball Nose End Mills
Brand	Genmitsu
Country Of Origin	China
Customer Reviews	4.5 4.5 out of 5 stars (2,082)
Cut Type	Flat Nose, Ball Nose
Cutting Diameter	3 Millimetres
Cutting Length	17 Millimetres
End Cut Type	Flat head, ball head
Finish Types	TiAlN, AlTiN
Global Trade Identification Number	04897093844385
Item Shape	Round
Item Weight	0.2 Kilograms
Manufacturer	Genmitsu
Manufacturer Part Number	/
Material	Tungsten Carbide Steel Alloy
Model Number	MBS-001
Number of Cutting Edges	2
Number of Flutes	2
Number of Items	1
Size Name	MC40A
Tolerance Held	Precision

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