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Boker Plus Kwaiken Air · Straight Back
3.54″ blade · 2.93 oz · ~0.83″ tall (derived)

Length and spine thickness drawn to true scale from published specs. Profile is the shape family's outline, not a scan of this model.

Boker

Boker Plus Kwaiken Air

EDC FolderFolding

The Boker Plus Kwaiken Air is a 3.54" straight back folder in VG-10, flat ground. The handle is G-10, secured by a liner lock. One of only 1 straight back blade in the catalogue, out of 140.

Blade: 3.54″
Weight: 2.93 oz
Steel: VG-10
Price band: Mid

Best for

Everyday carry and general utility

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Specifications

Manufacturer-published figures, cross-checked against knifeworks, bladehq.

Blade length: 3.54″
Blade shape: Straight Back
Grind: Flat
Steel: VG-10
Overall length: 8.39″
Closed length: 4.85″
Weight: 2.93 oz
Lock: Liner
Deployment: Flipper
Handle material: G-10
Country of origin: China

Why a straight back

A flat, unbroken spine from handle to tip with all the curve in the edge. The oldest knife profile there is, and it puts the most steel behind the spine of any shape.

About VG-10

The Japanese standard. Takes a very keen edge quickly; loses it sooner than the powder steels.

Edge retention

2/5

Toughness

3/5

Corrosion resistance

4/5

Ease of sharpening

4/5

1-5 is a relative ranking drawn from published composition and hardness, not a lab measurement. Higher is better on every axis, and no steel is a 5 across the board — edge retention and toughness pull against each other. All VG-10 knives