Razor sharp. Always make sure to keep away from children. All the knives and replacement blades are housed in a durable wooden box for storage. Lightweight and perfect balance handle offers a nice feel in the hands. Super easy to hold firmly and steadily with no slippage. Includes 3 piece precision knives and 13 piece razor sharp refill blades ( 3 piece already installed on the knife ). SK5 hardened carbon steel refill blades features durable and rust-resistant. Clever design really holds blades tight and the blades will never slip.