The blade on the 111mm large knife is better for heavier work. The 58mm mini knife is the one that people like to put on a keyring. Its non-locking large blade is 2.5 inches (60mm) long and is ideal for general everyday use. Of the two, the 91mm medium knife is the one that most people think of as the ‘standard size’ Swiss Army Knife. The small and medium knives are the most popular. The measurements relate to the length of the handle when all the tools are folded away. Swiss Army Knives come in seven sizes: mini (58mm, 74mm), medium (84mm, 91mm, 93mm), and large (111mm, 130mm), plus a credit-card size version. With hundreds of models to choose from, it can be hard to figure out which Swiss Army Knife to buy.
Wherever you are – at home, at work, in the car, hiking the Himalayas – the Swiss Army Knife solves a zillion of life's little problems. The knife's appeal is timeless its uses are limitless. For almost 130 years it's been the handy toolbox in every gadget-lover's pocket. Gadgets come and go, but the Swiss Army Knife has outlasted them all.
Swiss Army Knife Guide 2021 - know your knives and tools