【NON OFFENSIVE BLADE 】 The unsharpened blade of our practice butterfly knife will keep you away from danger as a beginner.This butterfly trainer is perfect for learning how to use the real thing without all the cuts and bruising to the hands. | 【PREMIUM QUALITY 】Our carefully designed butterfly knife trainers have a solid pin construction and copper washer setup with a spring latch to ensure these knives are made to last.Durably built and sleek in appearance, This knives give you the confidence to practice without fear! | 【PERFECT BALANCE】 We calculate a perfect weight balance of the butterfly knife trainer and a perfect center of mass to make sure you can flip it smoothly. | 【Best Choice】The smooth and burr-free handle gives you a comfortable grip. Suitable for a variety of fancy action.This is a perfect product if you are a butterfly knives lover.The unsharp butterfly blade is safe for you when practicing the flying knife. | 【PERFECT GIFT】This is a gift one for your friend if they are a butterfly knives lover; they can practice without harmful yourself.Just share these with your friends.