The Spring Heeled Jack is a slipjoint by Roland Lannier, which is intended as an EDC especially for the preparation of food: wide blade, especially light materials.
The use of carbon fiber as handle material made it possible to completely dispense with steel liners. Roland Lannier has also redesigned the back spring – with a G10 inlay. This allowed him to reduce the weight by about one third without affecting the functionality.
To stay true to the line, the axle screw is not made of steel, but of the lighter titanium.
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steel with G10 inlay
Beryllium Bronze Washer, Titanium axle bolt