Manufacturer: Denise Interchangeable Knitting & Crochet Tunisian crochet heaven! This compact set offers convenience, great value, and an extensive range of crochet possibilities. Hooks can be used for standard crochet, Tunisian crochet, plus lots of knitting applications. Connects with the unique and secure Denise locking connection. Completely interchangeable with Denise knitting needles, making it possible to add knitting to your crochet or crochet to your knitting. Easy to organize, with a place for everythingbut everything in its place only if youre not working on multiple projects at once! This set includes: - 12 hooks, one each in sizes F5/3.75mm to 19/15mm - 7 cords: 2 each 3 and 5" (8 and 13cm) 1 each 9", 12" and 16" (23, 30, 41 cm) - Four end buttons to turn any cord into a Tunisian/Afghan hook or stitch holder. - Two extenders for cord-to-cord connections. - Hard-shelled case that holds everything perfectly in place! Case dimensions (closed): 7 x 8 Â½ x 1 (18 x 21 x 2.5cm) Resin hooks are 4 5/8 long. To use as a standard crochet hook, attach a 3 cord to extend the hook length.