Crochet Hook Handle size J by Dimbulb, Download free STL model

Are vintage crochet hooks sized differently? I have the original packaging from the 60's or 70's. It's hero brand & says size i but it's too small to be 5mm. Size 6mm

What Crochet Hook to use with what Yarn?

Ericotry 9 Pieces Crochet Hooks Ergonomic Ergonomic Crochet Hooks Set Soft Grip Handle Knitting Needles Craft Making Tool for Arthritic Hands Size B

Crochet Hook Size conversion chart - Crochet for beginners

Tulip CarryT Interchangeable Bamboo Tunisian Crochet Hook : Size J-10 (6.00mm)

Katech Size J/ 6mm Crochet Hook, Ergonomic Crochet Hooks Handles with Soft Rubber Grip for Arthritic Hands, Long Metal Crochet Hooks for Crochet Beginners ANG Crocheting Lovers

Leisure Arts

Coopay Crochet Needle 6.0mm Size J Crochet Hooks for Beginners Kids/Adults, Ergonomic Crochet Set Metal Crochet Hook with Soft Grip, Ideal Knitting

Crochet Hooks - Crochet Hooks / Knitting & Crochet

Boye Quick Crochet Hook Set Size J, K & N