This is one of the original Kershaw Blurs, the Blur that started it all.
Like all Blurs, it's equipped with a big, slightly recurved blade that's ideal for multitasking. The blade shape offers both excellent slicing and piercing capabilities and the high-performance Sandvik 14C28N stainless blade steel offers corrosion resistance and hardness. The black Blur has a DLC (Diamond-Like Carbon) coated blade for extra corrosion resistance and enhanced looks.
This black Blur has, as you might expect, black handles with Trac-Tec grip-tape handle inserts for an extremely solid grip. The handle itself is durable 6061-T6 anodized aluminum, sometimes described as "aircraft aluminum" since it is a common material used for aircraft fittings. But the main point is that it's lightweight, extremely durable, scratch resistant and extra tough.
For easy one-handed opening, the Blur is equipped with SpeedSafe assisted opening. A short push on the thumb stud overcomes the resistance built into the torsion bar in the SpeedSafe mechanism. The SpeedSafe takes over and the blade moves out of the handle quickly and easily. One-handed opening is easy with SpeedSafe. The pocket clip is reversible for your choice of tip-up or tip-down carry. There's even a pre-drilled lanyard hole.
Aluminum Handles
A solid, lightweight material that can be molded, textured or anodized to provide better grip under extreme conditions.
14C28N Stainless Steel
Made in Sweden by steel company Sandvik, 14C28N is a clean, high-quality alloy with exceptionally high toughness for a stainless steel.
Made in USA
This product is USA born and raised.
Customer Reviews
Kershaw 1670BLK Ken Onion Blur Assisted Folding Knife 3-3/8" Black Plain 14C28N Blade, Black Aluminum Handles (31 reviews)
4.7 out of 5 stars
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Kershaw 1670BLK Ken Onion Blur Assisted Folding Knife 3-3/8" Black Plain 14C28N Blade, Black Aluminum Handles
Mac
Alabama
Jun 25, 2025
Pros: Blade Material, Blade Sharpness, Ease of Opening, Handle Feel, Handle Material, Lock Ease of Use, Lock Type, Overall Quality
Cons: None
It is what I was looking for
This is a daily use knife, and it is exactly what I was looking for that fit my needs!
Kershaw 1670BLK Ken Onion Blur Assisted Folding Knife 3-3/8" Black Plain 14C28N Blade, Black Aluminum Handles
Matt
Tennessee
Jul 24, 2022
Pros: Blade Material
Cons: None
Fantastic knife to keep in your pocket!
I had this model Blur 10 years or more ago and I lost it. I was an EMT and carried it everyday. One day it just came up missing! I have had many, many knives over the years and always stumble across new favorites. But there are a few knives that always stick in the back of your mind! I have thought about the Blur over the years and just recently my son gifted me a brand new one! The very same model as my original: the 1670BLK. I was so overwhelmed with joy and immediately began carrying it again and all the good memories came flooding back! The size and weight are right in my wheelhouse, the blade flies open with an authoritative “THWACK!”, the grip is secure, it sharpens easily, I love the slight recurve, and I love the way the thumb studs are angled and textured for easy flicking! This is one of my top 10 favorite knives I’ve ever owned (I’ve owed over 70 knives in the past 25 years). I would highly recommend this model to anyone! And although I’ve never made a claim, I hear Kershaw has a fantastic warranty service! This is a great knife, and they even have a version in S30V Steel!! Don’t stay on the fence; buy a Kershaw Blur today!
Kershaw 1670BLK Ken Onion Blur Assisted Folding Knife 3-3/8" Black Plain 14C28N Blade, Black Aluminum Handles
Been carrying one daily around five or six years now, and it's never failed me. Sharp out the box, minor touch ups now and then with a steel or ceramic rod to keep it razor edged. Comfortable to use, quick and easy deployment and light enough to go everywhere clipped to my right pocket along with a phone.. It goes through biltong like butter, and makes short work of packaging, twine, rope and the odd steak when restaurants fail to provide decent cutlery, only those silly serrated meat damaging toys.ocAll round great bit of kit. Strongly recommended.
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