Icetek Sports Stainless Steel Metal Practice Training Trainer Butterfly Balisong Style Knife Comb Cool This is a good choice if you are a butterfly knives loverYou could practice it without danger Material: Stainless Steel Whole Length: Approx.8.66inch/22.0cm Handle Length: Approx.4.80inch/12.2cm Blade Length: Approx.3.54inch/9.0cmBlade Width:Approx.0.67inch/1.7cmBlade Thickness: Approx.0.59inch/1.5cm