Iain Sinclair Cardsharp2 Authentic Credit Card Sized Folding Knife with Black Blade with Serial Number Ultra Thin- 2.2 mm thick Lightweight- 13 grams Blade edge is protected when stored in wallet or kit bag; Protective hilt appears when open Surgical blade technology with long 65mm cutting edge ensures longer lasting sharpness Authentic Iain Sinclair with Serial Number on each card