iThings J (TM) 1 pcs Practice Trainer Knife Tool Butterfly Knife Total length: 22.5CM (open) Blade length: 9.9CM Blade thickness: 0.26CM Blade material: 440C Hardness: 55-57 Stainless Steel Butterfly Knife Weight:130G Color:Blue Please arrow the color may be a little different,because of the light effect