Kershaw Blur Glassbreaker Review

As an all-metal knife with a “high traction” handle, the Kershaw Blur stands out. Top it off with smooth operation, proven blade design, and an assisted opening function, and you've got a pocket knife that is right in contention with the best of the best. Full-sized knives with assisted-open function, multiple carry options, and excellent blades will always do well in our scoring matrix. This is because they do well for the user.

Performance Comparison

Blade and Edge Integrity

There are many variables that inform the blade and edge performance of a pocket knife, especially over time. A knife designer often starts by selecting the material. The steel chosen is often where an assessment of a blade ends. We like to look more closely, as good designers are also looking more closely. The material must be shaped, ground, sharpened, and heat treated. Each of these steps has a profound impact on the eventual edge integrity. Finally, every blade, no matter what the manufacturer says, must be resharpened periodically through its lifespan. The Blur has an excellent blade. The steel holds an edge longer than you might expect. The hollow ground blade feels precise and thin in food and light tasks, while the steep edge bevel won't break down in rougher work.

We tested the hybrid straight/serrated version. It can be purchased with a fully straight blade, also. Since straight blades are easier to sharpen, we generally prefer those. We recommend serrated blades for those cutting tons of rope and webbing.

Ergonomics

The Blur is “full-sized,” with dual thumb studs and a spring-assist that allows for an easy one-handed opening. The flat, profiled aluminum side plates are textured. This size (overall length of 8 inches, handle length 4.6 inches) is suited to most hand sizes. Our only ergonomics wish was that the side plates were slightly rounded. Other high-scoring knives have a handle profile that fills the hand more readily. For heavy use, a rounded handle profile is better than the flat shape of the Blur.

Portability

You can carry the Blur a few different ways. Of course, you can drop it loose in a pocket. In this way, the aluminum edges of the blade and the pointed glass breaker will likely accelerate wear on your pocket fabric. You can reverse an included pocket clip for either tip-up or tip-down carry. Finally, there is a lanyard hole in the pinky end of the handle. Weight and bulk, overall, are typical for full-sized pocket knives. The .4" thickness is lower profile than most full-sized knives. Every knife that scores better than the Blur in this metric is quite a bit smaller. Compared to the other full-sized knives, the lower profile stature and the reversible pocket clip set it apart.

Construction Quality

Finding a high-end, mass-produced pocket knife with full aluminum scales is rare. This attribute, plus the Blur's light hinge and smooth locking mechanism, lends a confidence-inspiring feel to the Blur. In many product categories, our three-month test is enough time to draw out durability concerns. With pocket knives, a type of equipment often handed down through many generations, at three months of even heavy use, we are just scratching the surface. We had no problems with the durability and construction quality of the Blur. We only wish the construction included a feature to lock the blade closed. Assisted opening blades are more prone to accidental opening than “regular” blades.

Should You Buy the Kershaw Blur Glassbreaker?

The Kershaw Blur is super stout. The all-metal handle and thick blade add weight but inspire confidence. The thin handle profile and configurable pocket clip suggest everyday carry suitability. Now, you might choose the Blur over other options for size, blade stoutness, and the glass breaker. Quality and additional features aside, it is tough to justify the additional cost of the Blur.

What Other Pocket Knives Should You Consider?