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The Spyderco Endura 4 Aogami Super Blue Sprint Run knife features Aogami Super Blue blade steel manufactured in Japan. This high quality steel is used to make Japanese swords and results in a steel capable of extreme sharpness as well as edge retention. The full flat ground blade features a Super Blue core sandwiched between layers of 420J1 stainless. Combine this special blade with lightweight skeletonized stainless steel liners an injection molded grey FRN handle scales and you have an amazing knife. Comes with a four position pocket clip. length overall 8.78" (223 mm) blade length 3.80" (97 mm) blade steel Laminated Super Blue / 420J1 length closed 4.98" (126 mm) cutting edge 3.44" (87 mm) weight 3.3 oz (94 g) blade thickness 0.118" (3 mm) handle material FRN