Benchmade Necron Trainer 4.59 inch Butterfly Knife - Introducing the 99 Necron Trainer, a high-performance butterfly knife trainer designed to perfectly mimic the feel of the 99 Necron Bali-Song. Available in Blue G10, the Necron Trainer is optimized for expert flippers with latchless G10 handles and a skeletonized 440C training blade. Fine tune the Necron's balance and speed with adjustable tungsten weights and extendable handles for your perfect flip and desired feel. Like it's live-blade counterparts, the Necron is finished off with a hollow diamond texture found on the safe handle to give the user a tactile indication of which handle to grasp to avoid a sharp bite. Features Made in USA. Benchmade's LifeSharp service guarantees that Benchmade will re-sharpen your knife to a factory edge for free, for the life of the knife. The LifeSharp services includes cleaning, oiling, adjustments, and re-sharpening. Manufacturer Lifetime Warranty