Kubey KB Knives Zephyr Gray Titanium, Silver Bead Blasting M390 by K.C. Spiron (KB470A)
- Zephyr Gray Titanium, Silver Bead Blasting—a modern integral folding knife designed by K.C. Spiron. The blade is made of M390 powder-coated steel, and it features a comfortable, integral titanium handle. Reliable Frame Lock and ceramic ball bearings.
319,65 €This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
KB Knives Zephyr Gray Titanium, Silver Bead Blasting M390 by K.C. Spiron (KB470A) is a premium EDC integral folder featuring a Drop Point blade, a titanium handle, and a Frame Lock.
KB Knives Zephyr – an integral design by K.C. Spiron
KB Knives Zephyr Gray Titanium, Silver Bead Blasting M390 by K.C. Spiron (KB470A) combines a full-size utility blade with a handle constructed as an integral design. The one-piece titanium body minimizes structural joints, ensures high rigidity, and gives the knife a clean, high-tech form. K.C. Spiron’s design utilizes a Drop Point profile, a Frame Lock, and a double-sided pin, creating a folder intended for everyday carry, tactical applications, and regular utility work. The sandblasted titanium finish harmonizes with the silver, matte surface of the blade.
The blade is made of Böhler M390 powder steel, which has undergone vacuum heat treatment and a cryogenic process. A hardness of 60–62 HRC ensures long-lasting sharpness, while the flat grind provides effective cutting performance through cardboard, ropes, plastics, and technical materials. Ceramic ball bearings ensure smooth pivot operation, and the reversible titanium clip allows you to adjust the carrying position for either a right or left pocket.
Böhler M390 steel Drop Point blade
The Drop Point profile combines a durable tip with a long, slightly curved cutting edge. This geometry ensures good control during cutting, scoring, and tip work, while maintaining a wide range of applications in an EDC setup. The flat grind reduces resistance in the material and supports smooth blade guidance. The Silver Bead Blasting finish creates a uniform, matte surface that minimizes light reflections and emphasizes the tool-like character of the design.
Böhler M390 offers high wear resistance, very good corrosion resistance, and long-lasting sharpness. Vacuum treatment and a cryogenic process allow the steel’s properties to be utilized at a hardness of 60–62 HRC. The material is well-suited to the Zephyr’s purpose as a premium folding knife, where edge stability and less frequent sharpening are important during regular use.
Integral Titanium and Frame Lock
The handle is crafted from a single piece of Titanium, creating a rigid, integral structure with a smoothly contoured backspacer. The Gray Sandblasted finish gives the surface a subdued, industrial aesthetic and complements the silver blade well. Proper edge profiling enhances grip comfort, and the limited number of joints reinforces the visual cleanliness of the design.
The Frame Lock utilizes a spring-loaded section of the titanium body to stabilize the blade when open. Ceramic ball bearings ensure smooth and consistent operation of the mechanism, while the dual thumb stud allows for manual opening with either the right or left hand. The right/left titanium tip-up clip allows you to adjust the carry side, and the included Pouch protects the knife during transport and storage.
Key features at a glance
- Blade: Böhler M390 with a hardness of 60–62 HRC, Drop Point profile, flat grind, and Silver Bead Blasting finish.
- Handle: integral construction made of gray, sandblasted titanium.
- Mechanics: ceramic ball bearings, dual thumb stud, and Frame Lock.
- Carrying: titanium right/left clip, tip-up, and protective Pouch case.
- Applications: premium EDC, tactical applications, and everyday utility tasks.
Technical Specifications
| Product Number | KB470A |
| Product name | KB Knives Zephyr Gray Titanium, Silver Bead Blasting M390 by K.C. Spiron |
| Overall length | 212.00 mm / 8.35“ |
| Blade length | 94.00 mm / 3.70” |
| Blade thickness | 3.10 mm / 0.12“ |
| Handle Length | 118.00 mm / 4.65” |
| Handle Thickness | 11.00 mm / 0.43" |
| Weight | 134.00 g / 4.73 oz |
| Blade material | Böhler M390 |
| Blade hardness | 60–62 HRC |
| Blade profile | Drop Point |
| Blade grind | Flat |
| Blade Finish | Silver Bead Blasting |
| Handle Material | Titanium |
| Handle Finish Color | Gray Sandblasted |
| Backspacer material | Integral Titanium |
| Backspacer color | Gray Sandblasted |
| Clip | Right/left, Tip-Up |
| Clip material | Titanium |
| Pivot mechanism | Ceramic ball bearings |
| Lock | Frame Lock |
| Opening method | Manual, dual thumb stud |
| Additional accessories | Pouch |
| Designer | K.C. Spiron |
| Brand | KB Knives |
| Manufacturer | Kubey Knife |
| Country of origin | China |
Frequently Asked Questions
What is the KB Knives Zephyr designed for?
The Zephyr works well as a full-size premium EDC folder for cutting cardboard, packaging, cord, and plastic, as well as a durable utility knife with an integral handle.
What does the Integral Titanium construction mean?
The handle and backspacer form a one-piece titanium body. This design increases rigidity, reduces the number of joints, and gives the knife a cohesive, precision-crafted form.
How to care for and sharpen Böhler M390 steel?
The blade should be cleaned, thoroughly dried, and periodically coated with a thin layer of oil. For sharpening Böhler M390, it is best to use diamond or CBN wheels, finishing the job with a fine grit.
What sharpening angle does the manufacturer recommend?
The manufacturer specifies a range of 15°–20°. A lower angle increases cutting aggressiveness, while a value closer to 20° improves edge durability during heavier use.
Is the Zephyr suitable for left-handed people?
Yes. The knife features a double-sided thumb stud and a reversible right/left tip-up clip, allowing you to adjust the opening and carrying method to your preferred hand.
Prepared by: Specialists at Sharg® – Your expert in EDC and cutting tools
