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A J crochet hook is 6mm. See what yarn weight it fits and how it compares to nearby letters.

What letter is a 3.5mm crochet hook in US sizing, plus UK equivalent and which yarn weight it fits.

The full crochet hook size to yarn weight chart, from lace weight up to super bulky.

A quick reference for matching yarn weight numbers 0 through 6 to the right crochet hook size.

What to look for in an ergonomic crochet hook set, and when buying a full set makes sense over a single hook.

How to wet block a crochet piece, the most common blocking method for wool and other natural fibers.

What to look for in crochet blocking pins, including rust resistance and T-pin versus straight pin styles.

What to check when buying a crochet hook set that bundles a case, versus buying the set and case separately.

Susan Bates’s ergonomic line adds a cushioned grip to the brand’s inline hook shape, a budget-friendly option.

What to look for in an ergonomic crochet hook for arthritis: a wide, soft grip and a lightweight handle.