From a thread on the Spyderco.com site
Text from Spyderco:
Kumo is Japanse for spider and a fitting name for the new Japanse influenced fixed blade knife designed by custom maker R.J. Martin and manufactured by Spyderco. A self-professed steel junkie R.J. Martin is celebrated for integrating multiple grind-lines on the blades of his knife designs. Made from a solid 9-inch piece of VG-10 steel, the Kumo blade has two definite grinds: a swedge grind along the spine and a hollow-grind above the non-serrated cutting edge. Converging in the center of the blade the two grind lines meet creating a look that is streamlined and pleasingly tapered. Where the thumb naturally settles on the blade are a series of notches that latch onto the thumb pad adding an appreciative level of grip and cutting control.
In japanese fashion, the handle is wrapped with epoxy-saturated cord over an undercoat of pebbly black stingray skin that has a silver Spyderco bug Menuki peeking through the wrapping. The Kumo slips into a fitted black Kydex sheath mounted with a TekLok detachable polymer clip that can be situated to carry the knife in five different positions: vertical, inverted, cross-draw, small of back or horizontal position. Overall length of the Kumo is 8-5/16" (211mm) cutting edge is 3-3/4" (95mm) and it weighs 3 oz (85g).
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David