Working with crochet thread is a little different than crocheting with yarn. Thread size and crochet hook size must be understood.
Crochet Thread Basics – KnitPal
Guide to Thread Size - Handy Hands
Knotty Threadz - Page 11 of 19 - Crafts, Embroidery, Tassels
Understanding Crochet Thread Sizes
Understanding Crochet Thread Sizes
Knitting & Crochet Blogs
oval Archives - Vintage Crafts and More
Threadart 100% Pure Cotton Crochet Thread Size 10 Color 13, 42% OFF
What are the sizes of crochet thread? Check out our size guide