How does one translate a crochet hook with a letter I on it to the numbered hooks we have today? I found an old hook that may have belonged to my grandma
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How to choose crochet hook size and yarn for Amigurumi dolls? | Crochet hook sizes chart, Crochet hooks, Crochet hook conversion
![Amazon.com: Latest Multicolor Aluminum Crochet Hooks Set for Crocheting, Crochet Handles Engraved US Letter and Number Size B/2.25mm-N/10mm,Crochet Needles for Knitting Craft Weave Yarn -Crochet Accessory Included Amazon.com: Latest Multicolor Aluminum Crochet Hooks Set for Crocheting, Crochet Handles Engraved US Letter and Number Size B/2.25mm-N/10mm,Crochet Needles for Knitting Craft Weave Yarn -Crochet Accessory Included](https://m.media-amazon.com/images/I/71WEbQeorZL.jpg)