The Spyderco Darn Dao knife is based on a rare custom design by Bob Lum, and was inspired by the "single knife" broadsword of classic Chinese martial arts. This formidable fixed blade is equipped with a satin finished, full-flat ground CPM-154 stainless steel blade with an unsharpened swedge to offer a fine point. Its full tapered tang is fitted with contoured black G-10 scales that flare at the bottom for a positive grip. The Darn Dao is paired with a handcrafted leather sheath with a thumb-break-style snap to provide secure retention and a quick draw. The Darn Dao is a Spyderco "Flash Batch", which is similar to a Sprint Run, but features a brand new design not previously produced. Each knife in this Flash Batch is individually numbered. This is a one-time-only production run. This knife is #0589 of 1200. Comes with nylon zippered case. Excellent condition.