Often referred to as blade openers or knife openers, these compact steel tools became popular in the early–mid 20th century alongside the widespread everyday carry of folding knives. Many examples doubled as promotional or branded items, distributed through cutlery counters, sporting goods shops, and gunsmiths.
Sized for pocket carry and fitted with a loop for attachment to a keychain, watch chain, or shop fob. Commonly collected today as small pieces of American cutlery history and industrial advertising.
