Ursa 4 Blade Gent’s Pocket KnifeA blade for every occasion! Our 440 stainless steel Ursa Gents pocket knife features four blades and a double sided prehistoric woolly mammoth ivory, mammoth tooth, or nephrite jade handle. (Some styles feature brass accent.) Approximately 3 closed and 7. 5 with both sides opened Prehistoric woolly mammoth ivory is found in Alaska, Canada, Russia, and Siberia. These fossils range in age from 10,000 to 200,000 years. Colors may vary from photograph in