would these bits drill a hole in stainless steel?

They can. I made sure that I kept them well lubricated but still had to sharpen after about 8 holes.

What does Nitride Coating actually mean?

Nitriding is a heat treating process that improves heat-resistance, toughness and durability.

So why does the picture show left hand drill bits when i assume that these are right hand?

As far as I know they are right hand drill bits. Stated another way when inserted into a drill which is set for forward they will dig into the piece you are drilling. I don't recommend for cutting metal - while usable they wore out quickly assembling some metal ducting for a dust collector.

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🔧 Drill Like a Pro with Amoolo's Cobalt Set!

HASSLE FREE WARRANTY - 90-day satisfaction guarantee for peace of mind.
UNMATCHED DURABILITY - Crafted from premium M35 Cobalt HSS for superior wear-resistance.
VERSATILE SIZE RANGE - Includes 13 commonly-used sizes for all your drilling needs.
EFFICIENT PERFORMANCE - Fully ground spiral grooves reduce friction for faster, cooler drilling.
PRECISION ENGINEERING - 135° Split Point design ensures accurate drilling without walking.

The amoolo Cobalt Drill Bit Set features 13 high-speed steel bits made from M35 Cobalt, designed for precision drilling in various materials including steel, stainless steel, and wood. With a 135° Split Point for accuracy and a durable construction, this set is perfect for both professionals and DIY enthusiasts. Plus, it comes with a 90-day warranty for added assurance.

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Manufacturer	amoolo
Part number	AT1902
Item Weight	159 g
Package Dimensions	15.24 x 12.7 x 4.06 cm; 159 g
Item model number	AT1902
Size	1/16-1/4 in (13pcs)
Style	M35 Cobalt Twist Drill Bit
Finish	Dull Gold Color
Material	M35 Cobalt HSS
Item Package Quantity	1
Number Of Pieces	13
Tool Tip Description	Split Point
Measurement System	Inch
Batteries Included?	No
Batteries Required?	No

amoolo Cobalt Drill Bit Set (1/16"-1/4",13 Pcs), M35 HSS Metal Drill Bits for Steel, Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood

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