Viper Odino N690 Bohler Stonewashed Folding Knife Green V GG. This Knife from the professional knifesmiths at Viper uses high quality stainless steel blade with a vacuum double temper and cryogenic heat treatment process to provide you with a blade that will retain it's sharpness for much longer than blades made using inferior steels.For a great way to make sure you are working with the perfect tool for any job choose the Viper Odino N690 Bohler Stonewashed Folding Knife. Specifications for Viper Odino N690 Bohler Stonewashed Folding Knife: Manufacturer: Viper Closed Length: 4.25 in Blade Material: N690 Handle Finish: Matte Handle Color: Green Quantity: 1 Color: Green Package Contents: Viper Odino N690 Bohler Stonewashed Folding Knife Viper V 5918 GG: Odino N690 Bohler Stonewashed Folding Knife Green