This needle is very stable and is ideal for rooting yearling mohair, adult mohair, or even for human hair . Especially if you root from the tip of the hair, these needles proved extremely effective. Due to the shape and spiral arrangement of the barbs you pull the hair end deeper into the vinyl, with no unsightly stubbles sticking out. Due to its particularly rounded shape it avoids unsightly hole in the vinyl and also helps prevent hair from breaking during rooting. If the head is heated by a heat source, eg. halogen lamp or a rice bag , the needle will slide effortlessly into the vinyl, leaving hardly visible punctures .