This is a professional quality swivel knife. This model is made with double bearings inside the body, which allows the knife to operate smoothly and effortlessly. 
 
What makes this Swivel Knife even more special is its dual functionality. It can operate like a regular Swivel Knife with a fixed blade, or it can transform into a model with a flexible, rotating blade. 
 
The length of this SK knife can be adjusted by extending the yoke, allowing it to range from 70mm to 90mm. This feature makes the knife adaptable to various hand sizes, enhancing comfort and usability.
 
the diameter of the barrel is 13.5mm
 
This item includes the swivel knife and one free 1.5mm angled blade.
You can choose any additional blade from the options box.
 
options blade 
Flat (9.5mm) / thickness 2.0mm
Flat (9.5mm) / thickness 1.5mm
Flat (9.5mm) / thickness 1.0mm
 
angled (6.5mm) / thickness 2.0mmangled (6.5mm) / thickness 1.5mm
angled (6.5mm) / thickness 1.0mm