Threadwinder.info - FOLDING & SWIVELING CROCHET HOOKS

All these hooks swivel on pins, most of them folding-up to become more compact. Most of these hooks were designed to solve the problem of fine hooks snagging unintended items. Some provide a selection of different sized hooks.
I know of five types of folding/swiveling crochet hooks. Click on any picture for a close-up


Wire handles with sheaths. Some of this type provide a selection of two crochet hooks and others provide a selection of three.
On the left: closed hook, in center: open hook, and on right: ready to crochet.








Wire handle with swiveling hooks. The brass band slides to secure the hook in place.







Other styles of folding crochet hooks ---
    left on each picture: 2-part sheath, folding hooks on inside.
    center on each picture: handle folds back to encase the hook.
    right on each picture: Bakelite pen-knife-style crochet hook.