Special clamp for narrow fillet knives with reduced sharpening angle. Thin clamp jaws are produced from structural spring steel that provides sufficient clamping force. The clamp with amended jaw configuration and special screws application has minimal ultimate sharpening angles 6.5 gr. for each side. It's not recommended to use knives with spine thickness more than 2.5 mm. to avoid damage to the sponges. Recommended knife length for the clamp: 30-300 mm. Minimal knife width 10 mm, spine thickness 2.5 mm, angle range 6,5-32 degrees (wide knife range can be different). Suitable for K-01 model. Sponges, screws and flat springs can be bought separately.