XIKAR's Xi series of cutters are world renowned. So when we proudly introduce a cutter without the iconic 'teardrop' shape, you can rest assured the Ultra Slim™ has passed our strict tests for sharpness, quality & style. At 60 ring gauge and as thin as a few credit cards, (only 3.5mm thin!) the Ultra will fit any occasion. As useful as any Xi cutter, you'll never forget it rests your pocket or wallet.