Combat Hunting Survival Knifes Flick Knife Practice Training Balisong Knife Tactical Very Sharp Butterfly Knives High Quality Blue Hole All Steel Version!!Dear Customer: Thank you for choosing us! Happy shopping! This knife is very sharp. Please use with care and use with care. The bag is safe and easy to carry. This is a 100% brand new high quality product that is not easily damaged. Item No: High Quality butterfly knife Overall: 23. 2CM(9. 0 inch) Blade length: 9. 5CM (3. 7 inch) Handle length: 13. 5CM Thickness: 3mm Blade material: 440C Hardness: HRC58 Weight: 135G Package include : 1 x butterfly