My favorite crochet hooks are Clover aluminums and Hamanaka hooks. I am constantly double checking the conversion between Japan and US crochet hook sizing. I finally broke down and made a chart for myself. So
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Crochet Hook Conversion Chart - metric, US letter and number and UK old sizes
Crochet Hook Sizes Everything You Need To Know Crochet 365, 40% OFF
Crochet Hook Sizes Everything You Need To Know Crochet 365, 40% OFF
Crochet Hook Conversion Chart - metric, US letter and number and UK old sizes
Crochet Hook Conversion Chart - metric, US letter and number and UK old sizes
Crochet Hook Conversion Chart - metric, US letter and number and UK old sizes
Crochet Hook Conversion Chart - metric, US letter and number and UK old sizes
Crochet Hook Sizes Everything You Need To Know Crochet 365, 40% OFF
The Ultimate Crochet Hook Conversion Chart (US, UK, Japan!) Crochet hook conversion chart, Crochet hook conversion, Crochet hooks
Crochet Hook Size conversion chart - Crochet for beginners
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Crochet Hook Conversion Chart - metric, US letter and number and UK old sizes
Crochet Hook Conversion Chart - metric, US letter and number and UK old sizes