Felting Needles, purchase the number and style you require. Fine 40 gauge: A fine needle for detail work and getting a neat surface. Best not to use it when working with coarse fibres or for rough sculpting/bulk work. Barbs on 3 sides Medium 36 gauge: A good needle for making the bulk of a 3D piece and again, attaching pieces well. Not good for any detail work. Barbs on 3 sides. Coarse 32 gauge: A good needle for making the bulk of a 3D piece and again, attaching pieces well. Not really suitable for fine detail work. Barbs on 3 sides. Reverse Barb 40 gauge: The barbs go the opposite direction which results in fibre being pulled out. This is useful to create a fluffy finish on well felted pieces Spiral 36 gauge: The needles are twisted which makes felting faster while reducing the surface holes other needles make. Star 38 gauge: With barbs on four sides it is a great all round needle, good for finer work and finer wools as well as bulky sculpting work.