From Leisure Art Site:

The Knook Expanded Beginner Set lets you use light, medium, and bulky weight yarns to make small, medium, and large projects--including full-size afghans! Replacing traditional knitting needles, these unique crochet hooks have a hole in one end for a cord to hold your stitches as you create true knitted fabric. Each set contains 5 bamboo Knooks in sizes E-3.5 mm, G-4.0 mm, H-5.0 mm, I-5.5 mm, and J-6.0 mm; 5 cords in two 36” lengths, two 72”, and one 120”; 3 cord clips; 3 yarn needles; and a complete how-to book with 24 pages of step-by-step beginner instructions for both right- and left-handed users! The book also includes three easy projects--a cowl, baby blanket, and lap robe.

Paperback published in January 2012 by Leisure Arts, Inc.

leisurearts.com