KB Knives Decimal Blue Titanium, Satin M390 by Mark Perez (KB354C)
- Decimal Blue Titanium, Satin, strong, handy EDC folder designed by Perez. Blade made of vacuum-hardened and ice-hardened Böhler M390 steel. Straight titanium handle fits in any hand. Proven liner lock. The perfect everyday tool!
0,00 €KB Knives Decimal Blue Titanium Folding Knife, Satin M390 by Mark Perez (KB354C)
The KB Knives Decimal KB354C is a compact titanium folding knife designed by Mark Perez, combining a Böhler M390 steel blade with a blue anodized handle featuring fine Micro Line Milling. The Wharncliffe profile, Liner Lock, and ceramic ball bearings come together to form a modern EDC design with a technical, refined character.
The 80.00 mm blade features a flat grind and a Belt Satin finish. It opens manually using either the front flipper or the hole in the blade, offering two convenient one-handed opening options.
Böhler M390 and Vacuum-Cryogenic Heat Treatment
The blade is made of Böhler M390 steel, hardened to 60–62 HRC. Vacuum hardening combined with cryogenic treatment was used, which promotes high hardness, wear resistance, and stable steel properties during regular use.
Wharncliffe, flat grind, and Belt Satin
The Wharncliffe profile provides a long, functional cutting edge and good control during precision cutting. The flat grind facilitates smooth blade glide through the material, while the Belt Satin finish gives the blade a refined, satin-like appearance.
Blue Titanium, Liner Lock, and Ceramic Bearings
The handle is made of titanium and blue-anodized. The surface features fine Micro Line Milling milling, which emphasizes the technical character of the design and adds texture to the grip. The titanium backspacer and clip feature the same blue finish.
Ceramic ball bearings ensure smooth blade operation, while the Liner Lock stabilizes the blade when fully open. The clip is positioned on the right side in a tip-up configuration.
Key Features at a Glance
- Böhler M390 — steel with a hardness of 60–62 HRC.
- Vacuum-cryogenic treatment — enhances the steel’s high hardness, wear resistance, and stability.
- Wharncliffe — a profile with a long, functional cutting edge.
- Flat Grind — versatile cutting geometry.
- Belt Satin — satin-finished blade.
- Blue Anodized Titanium — blue anodized handle.
- Micro Line Milling — fine milling of the handle surface.
- Liner Lock — classic blade lock.
- Ceramic ball bearings — smooth operation of the mechanism.
- Front Flipper and blade hole — two ways to open the knife manually.
Technical data
| Product Number | KB354C |
| Product Name | KB Knives Decimal Blue Titanium, Satin M390 by Mark Perez |
| Overall Length | 183.00 mm / 7.20" |
| Blade Length | 80.00 mm / 3.15“ |
| Blade Thickness | 3.10 mm / 0.12” |
| Handle Length | 103.00 mm / 4.05“ |
| Handle thickness | 12.00 mm / 0.47” |
| Weight | 95.00 g / 3.35 oz |
| Blade material | Böhler M390 |
| Blade hardness (HRC) | 60–62 HRC |
| Blade finish | Flat |
| Blade Finish | Belt Satin |
| Handle material | Titanium |
| Handle finish color | Blue Anodized, Micro Line Milling |
| Backspacer material | Titanium |
| Backspacer color | Blue Anodized |
| Clip | Right-hand, tip-up |
| Clip material | Titanium |
| Pivot Pin | Caged Ceramic Ball Bearing |
| Lock | Liner Lock |
| Opening mechanism | Manual, Front Flipper / Thumb Hole |
| Additional accessories | None |
| Designer | Mark Perez |
| Brand | KB |
| Manufacturer | Kubey Knife |
| Country of Origin | P.R.C. |
Frequently Asked Questions
How do I care for Böhler M390 steel?
It’s a good idea to clean the blade regularly and dry it thoroughly. M390 is highly corrosion-resistant, but proper care helps maintain its sharpness and surface appearance for longer.
How do you sharpen the KB Decimal?
High-performance abrasives, especially diamond ones, work well with M390 steel. It’s best to maintain the factory edge geometry and guide the sharpener evenly along the entire length of the blade.
How does the Liner Lock work?
The Liner Lock uses a spring-loaded liner component that, when the knife is opened, slides behind the blade and stabilizes the blade in the open position.
How do I care for the blue anodized handle?
It’s best to use a soft, slightly damp cloth for cleaning. Avoid harsh abrasives, which can alter the appearance of the anodized surface and the fine milling pattern.
How to maintain ceramic ball bearings?
It’s a good idea to regularly clean the area around the pivot of dust and fine debris. If necessary, you can use a small amount of a cleaner designed for knife mechanisms.
Prepared by: Specialists at Sharg® company – Your expert in EDC and cutting tools
