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
C2c Crochet: Crochet Hook Sizes Conversion, 42% OFF
Crochet Hook Conversion Chart - metric, US letter and number and UK old sizes
C2c Crochet: Crochet Hook Sizes Conversion, 42% OFF
Crochet Hooks Conversion Chart For The US UK and Japan - CrochetKim™
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
Learn How To Crochet for Beginners • With Free Easy Patterns
Crochet Hook Size Conversion chart for UK, USA, Canada
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!) - Little World of Whimsy