Black Label Blades
Black Label Blades
Black Label Blades
Black Label Blades
Black Label Blades
Black Label Blades
Black Label Blades
Black Label Blades
Black Label Blades
Black Label Blades
Black Label Blades

Black Label Blades

Crafted in Japan for optimal sharpness.

Sale price$8
Shipping calculated at checkout.
Supply warranty, free shipping and 100 day free trial

Our Black Label blades are made in Seki City, where state-of-the-art technology fuses with ancient Japanese forging skills to produce the most renowned shaving blades in the world. Pair with a SUPPLY razor for the ultimate shave.

8 perfectly crafted blades come in our QuickLoadTM cartridge. You’ll get that tactical reload feeling every time you load a new blade.

8 Injector Blades (90-Day Supply)


High-Carbon Stainless Steel

Chromium + PTFE

Length: 38.1 mm (1.5")
Cutting Edge Length: 36.3mm (1.43")
Width: 8 mm (.314")
Thickness: .25 mm (.025")

What type of blades are these?
The Single Edge accepts standard "injector" style blades. Each razor ships with a magazine of 8 stainless steel, Japanese-made injector blades. A pack of blades typically lasts up to three months and only cost roughly 10 cents per shave.

Are they proprietary?
Nope! These blades have been in production for 100 years and can be easily purchased on our website ,, and more.

How long do they last?
Everybody changes out their blades at different intervals due to the fact that our skin, hair, and preferences are all different. That said, most customers easily get 8 to 10 shaves out of each blade. A single pack of eight blades can last up to three months if you shave 5-6 times a week.

How are these blades different from DE blades?
Our blades are twice as thick as blades that are used in both multi-blade and single blade razors, which means they flex less, they cut cleaner, and they last longer. Fun fact: injector blades were originally invented by Schick in the early 1900’s. They quickly developed a cult following as a safer alternative to the Gillette double edge blades.

How do I dispose of used razor blades? Do they create waste?
Each Single Edge ships with a magazine of 8 stainless steel injector razor blades. If you look at the back of the pack, you will see a nifty opening to insert used blades. No sharp objects lying in your trash can or recycling bin unattended or waiting for an unsuspecting toddler or pet to find. Once you are through with all of your blades, you can recycle the entire magazine, blades and all. Safe and better for the environment!

1. Insert the key from your blade pack into the head of the Single Edge Razor.

2. Push the slider across - toward the razor - to inject a blade.

3. You just swapped out your blade in less than 2 seconds without touching the actual blade!

Supply press mentions
Pair of hands reloading the supply Black label blades
safe & easy
Butterfingers? No Problem

All other single-blade razors force you to unwrap and load thin, sharp blades by hand. That's why we designed a custom-built injector mechanism which keeps your fingers safe, and enables lightning-fast blade changes.

No Cutting Corners – Only Hairs

Unlike some of our competitors, we refuse to scrimp on materials. Single Edge blades are twice as thick as standard razor blades, meaning that each one stays sharp for longer.

Man shaving with the supply SE razor
Supply Quickload cartridges
One Cartridge, Three Months of Shaving

You're getting a lot of firepower in one little package. Eight blades will keep you fresh-faced for an entire summer (or winter, or rainy season). It's all recyclable, and there's a blade disposal slot in the back so you never need to fill your trash with sharp objects.

Customer Reviews

Based on 292 reviews
Loek Hopstaken
A close shave that lasts a day

These super sharp blades provide a close shave that lasts a day. They last much longer than the ones I was used to. After 55 years of shaving, this is nothing short of a revelation. Thanks!!!

Mike Falanco
Great products

Absolutely the best razor I ever shaved with! The team is also very responsive.

Sharp for smooth shaving

I love the razor and blades are great too. I am getting about 2-3 weeks of shave per blade which is awesome compared to my safety razor (about a week max).

These Blades Glyde like Butter!

I ran short of the original blades so I decided to buy the black label ones, best decision ever! these blades glyde sooo smoothly on my face like a katana through butter! I have to say this is thee softest shave I 've ever had!

RIten Jaiswal
Have lifetime subscription

What can I say... They are really good blades. I have the original handle and love it.

Scott Snider
They are good

I tried the 3 and 4 blade shavers and they don't do as good a job as the single blade you guys make.

Caleb Ritchie
New Blades

So easy and got my new blades super fast!

Philip Bisby
Great Blades

I really enjoy these blades and razor. They stay sharp for a surprising number of shaves.

Eric Lancaster

Nice blades. Haven’t had a bad one in any batch.

Mikhail Krughkov
Sharp, fits my 'retro' model, works well

So they updated the shavers models and my 3-year old masterpiece no longer selling. I finally out of blades on that model. No worries, their new blades fit the same as my original blades. Overall I love the shaver, keeps me keen.