Linder Dual Action Automatic Hidden Release Knife. This double action hidden release knife is made by linder. It has a 440 rostfrei 3.25 Inch blade 7.75 inches overall length. Made in germany. It has a polymer handle with a rubber insert over the activation button. This knife can be opened like a regular manual knife or automaticaly with the push of the hidden button. Comes with a leather belt sheath.