what is the difference between the black blades & the silver blades?

The 'silver' blades will be a high carbon stainless steel probably along the lines of 440c, the 'black' blades will be a true high carbon Steel long the lines of 1050 or 1095 series. Though stainless steel has come a long way true high carbon steel will take a sharper edge and hold it longer in use. The silver color is natural to steels stainless or high carbon..... The black color is due to a surface treatment called bluing traditionally used on fire arms to protect them from sweat and natural acids of human skin.

Are these blades safe to cut on glass?

You can only cut glass with the first blade. It’s where you see the half moon cut out. That’s for cutting glass or hard plastic and acrylic. Though I would recommend getting an actual glass cutter. But if you do use this don’t use the side with the blade that’s too thin and not intended for glass. The side with the crescent moon, which gives the blade two pointS to have contact on the glass with is what you are suppose to use. Once you break off the first tip you won’t be able to use it for cutting glass. It has to be a new blade and the first tip. Also I hope you are using a tool and not just the blade, you will slice yourself if you don’t use the blade without a holder. Good luck.

Are these an equivalent to Hyde Tools 42345?

Yeah, all those snap off 9mm blade holders are compatible with all 9mm blades. These NT CUTTERS are nice, and another nice Japanese brand is OLFA. They both make 9mm blades too with a 30 degree tip so they actually have a pointy tip like your traditional pocket knife.

What is the difference between the bd-1800 and bd-2000 blades?

We would like to answer to your question as an NT’s authorized distributor in the USA. Both BD-1800 (silver blade) and BD-2000 (black blade) are 30 degree blades that made of high quality carbon tool steel. BD-2000 (black blade) has an extra process called ‘Bluing Process’ that gives an oxide coating with blue/black appearance and protects from rusting. With even more steps taken during the finishing process, the cutting edge of BD-2000 (black blade) has even finer sharpness than BD-1800 (silver blade). BD-2000 (black blade) is recommended for professional use only due to its fine delicate edge. Hope this helps.

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Reviews

L**I

Best blades.

These are the best blades for a great price. The carbon steel ones retain their sharpness for multiple cuts, however, you should know that they rust easily when exposed to water. It does not affect performance.

19.11.2025

D**R

Great Blades!

Excellent quality and holds a great edge. The price is very reasonable too!

21.08.2025

J**A

Superb Japanese quality

I purchased the black extra sharp. These are so sharp I think you could cut off a finger and not even know it. I want these on hand at all times.

15.11.2025

P**Y

Safe disposal

Disposal mechanism is very reasonable and easy to snap. The tip remains sharp without bending after every snapping. Overall a worth buying.

2.11.2025

B**Y

Dull semi fast but super sharp

These are great value for the money, fit both, my Olfa brand and dewalt brand 9mm knifes perfectly. They are always extremely sharp but depending on what you cut, they dull faster then Home Depot’s Husky brand equivalents.

19.12.2025

T**Y

Recommended by CK wraps

Held up great! Not as sharp as carbon blades but good for vinyl work. Would buy again! This pack will last awhile though.

17.10.2025

T**T

Another Adam Savage recommendation

I am not using them in a wet environment so stainless is unnecessary. Again, these were a direct recommendation by Adam Savage on his YouTube channel. He should know as he has spent 1000s of hours working with foam, plastic sheets etc in his former profession and current hobby. Nothing beats the combination of price and quality for the sheer number of extremely sharp long lasting cutting edges. I find they are strong and flex, have never broke one on accident and I have no problem snapping the end because I line up a single blade and use a pair of flat nose pliers (duck bills') to break them off at the perfect angle. Unable to create a review for totally different item purchased in the same listing. So, I have also included photos of NT Cutter 9mm Snap-Off Extra-Sharp Precision Blades, 30 Degree, Black, 10-Blade/Pack, 1 Pack (BA15P), and the thin precision NT Cutter PRO Auto-Lock Stainless Steel Graphic Knife (AD-2P) they fit.

17.07.2023

J**S

Great blades that do the job

Good blades and lots of them. Now, I can actually snap them off when needed instead of holding out due to supply limitations. Fits and works great in my VVivid precision cutting tool.

11.07.2025

ASIN	B009F6BMQQ
Best Sellers Rank	#9,731 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #27 in Art Blades
Blade Length	72 Millimeters
Blade Material	high quality carbon tool steel
Brand	NT Cutter
Brand Name	NT Cutter
Color	Silver Color
Customer Reviews	4.8 out of 5 stars 4,053 Reviews
Global Trade Identification Number	04904011026676
Included Components	blades
Item Height	0.02 inches
Item Length	2.83 Inches
Item Type Name	30 DEGREE SNAP-OFF BLADE
Item Weight	0.2 Pounds
Manufacturer	NT Incorporated
Material	high quality carbon tool steel
Material Type	high quality carbon tool steel
Product Style	Carbon Steel 50-pack
Unit Count	50.0 Count

NT Cutter 9mm Snap-Off Precision Blades, 30 Degree Blades, 50-Blade/Pack, 1 Pack (BD-50P) - Silver Color

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