This is a Weaving Crotchet Hook or Latch Hook or Weaving Hook Needle used on crotchet braids which are synthetic hair extensions for weaving or braiding onto the natural hair; e.g. jumbo hair braids, etc. Basically, the natural hair can be twisted or braided, but it's most commonly styled into cornrows before affixing the synthetic hair. Though crocheting does not damage your hair; it's good to make sure your hair is healthy before it's braided down. The weaving latch is about 15cm in size. Name Weaving and knitting crochet. Material: Plastic and Metal. Color: As the picture (Pink & Lemon) Length: 16cm to 15.5cm.