Brass Mini Paper Cutting Knife Self-defense Keychain $ 5.66 Product information: Handle material: brass Blade material: High carbon steel (very sharp, prohibited for use by minors) Knife closing length: 40mm, unfolding length: 53mm Blade length: 10mm, widest point of blade: 5mm, blade thickness: 0.2mm (thin) Brass handle diameter: 8mm Packing list: Self-defense key chain X1PCProduct Image: