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
Crochet Hook Sizes - Everything You Need to Know - Crochet 365 Knit Too
Crochet Hook Sizes » Knitting-and.com
Crochet Hook Sizes Conversion Chart
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Crochet Hooks: How to Choose the Correct One for Any Project
How to choose crochet hook size and yarn for Amigurumi dolls? | Crochet hook sizes chart, Crochet hooks, Crochet hook conversion
Crochet Hook Sizes & Conversion Chart - Heart Hook Home