Spacer Material, Black
6 x 22 cm piece of vulcanized fiber, 0.8 mm thick.
These are used between handle scales and the blade, or between the different pieces of a stick tang knife.
For instance between the bolster and the blade, or on each side of a piece of antler.
An example of fiber spacer material between the coolabah, gum tree and nickel silver pieces. Knife by Bjorn Jacobsen, blade by Lauri: