The Benchmade 810SBK Osborne Contego is a big tactical folding knife, designed by Warren Osborne. It has a CPM M4 steel blade. A very sturdy and hard steel, but not stainless because of the high amount of carbon. Except for the edge itself, the blade is protected by a durable black coating. Nevertheless, the knife has to be looked after to prevent rust on the blade.
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The handle is made out of very rough G10. This gives a very good grip, but makes it pretty rough on your hands. The back of the handle has a glass breaker.