Read honest … Spyderco … Made from ultra-hard alumina ceramic material, Spyderco's ultra-fine-grit benchstone is used like a traditional sharpening stone, but does not require oil or water. May 15, 2012. Its broad, flat surface is ideal for putting … This high quality Bench Stone is produced by Spyderco. It features a Ultra-fine Grit design and measures 8''L X 3''W X 1/4''H. 8" x 2" x 1/2" Size; Made of durable ceramic material. Tom K. Oregon. Find helpful customer reviews and review ratings for Spyderco - Tri-Angle White Sharpening Stone with Ultra-Fine-Grit for Professional-Grade Finishing and Polishing - 204UF1 at Amazon.com. Pros: Durability, Ease of Use, Effectiveness, Overall Quality. Washington State, Northwest, Puget Sound Fishing, Hunting, Camping, Hiking Outfitter Spyderco Bench Stone - Ultra Fine. SPYDERCO uses only top-notch White High Alumina Ceramic to insure long-lasting quality. This is one of the major reasons at to why I chose to try the Spyderco Ultra Fine stone. Item # 302UF Price: $89.95 $74.99 (Save 17%) In Stock. The case is nice too. Cons: None. Get our FREE Sharpening Resource Guide with any $50 order. This ultra fine … Made of the same ceramic material of the famous Triangular rods, this is an ultra fine ceramic bench stone. This Spyderco Knife Sharpening Stone …