The B-400 model features natural finished aluminum handles with stainless steel spacers and a swappable latch. The pivots have 304 bearing surfaces and phosphorus bronze washers. The ti black finished 14C28N stainless steel clip point blade has a double tang pin design for great performance. The Bear Song IV butterfly knife from Bear OPS features natural finishd 6061 T6 aluminum handles with stainless steel spacers. This USA made butterfly knife is great for serious users. The B-400 has a latch with can be switched to either side and the pivots have 304 bearing surfaces and phosphorus bronzed washers. The blade on this model is a 14C28N stainless steel clip point with a ti black finish and double tang pin for maximum performance. SPECIFICATIONS: Blade Length: 4 3/8" Handle Length: 5.4" Overall Open Length: 9 3/4" Action: Butterfly with Latch Blade Material: 14C28N Blade Style: Bowie style Clip Point, Handle Material: T6 6061 Aluminum Weight: 4.4 Ounces Made in the USA