Features: Stonewashed stainless steel blade heat treated for a durable trainer blade. Phosphorus bronze washers provide ultra-smooth flipping action. Channel constructed blue and silver aluminum handles are subtly textured for grip. Machining tolerances for smoothness, minimal handle play, and zero blade tap. Description: Since its release in 2016, the Squidtrainer has been insanely popular among bali flippers, but Squid Industries has continued to upgrade the design to make it better and better. The V4 features improved textured markings and jimping for an even finer grip, press-fit steel rods installed into the ends of each handle for improved feel and momentum, and 416 stainless steel bushings tuned to each blade for the best tolerances. This beauty is a joy to use, and it's been designed specifically to maximize your learning experience. Check out more butterfly knives! There are a lot in stock at Blade HQ!