Amazon.com : Practice Butterfly Knife - Unsharpened Blade Practice Balisong Butterfly Knife Trainer - 7.87'' Stainless Steel Folding Training Knife - Rainbow Trainer Butterfly Knife for Practicing Flipping Tricks : Sports & Outdoors
3 PACK Butterfly Knife Trainer with spanner, Practice Metal Butterfly Steel Trainer Knife Folding Knife for Practicing Flipping Tricks - no Offensive Blade Unsharpened Blade - for Beginner, Children, Butterfly Knives Lover and more