Knob (screw) that fits our knife blade Fiskern, item no. BO24000. The screw ensures a solid attachment of the blade to the handle, as the blade runs through the handle. The knob (screw) has a height of 2.4 cm. It is compatible with the cork handle blank with two leather patches, item no. BO90010. In addition, wooden pieces must be made for the front and back of the cork to complete the handle.