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Compare crochet hook sizes
Compare the diameter in millimeters; numbered steel hooks and lettered hooks belong to different sizing systems.

Related lessons and tools
Compare the diameter in millimeters; numbered steel hooks and lettered hooks belong to different sizing systems.
Before you start
Keep the exact labels and make two comparable samples. Change one material property at a time and use the intended finishing method on both.
Try this example
Two hooks marked 2 can have different diameters. Read their manufacturer tables, then crochet ten stitches with each and compare the relaxed width.
Check your result
- Compare the dry samples for recovery, surface, drape and the property needed for the project. Record observations separately from label claims.
- A fiber name or category cannot predict every finished fabric. Construction, treatment, gauge and use all affect the result.
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