These are our most popular needle size, high quality felting needles in bulk set. These are triangular needles with 3 sides, 3 edges allowing you to felt quicker and more efficiently. All felting needles are thin and by their very nature can be fragile if used too aggressively. In order to prevent breakage, it is a good ideal to use forward and backward movement for best results. Avoid side to side movement as you needle felt. We have found there is higher demand for needle felter’s buying in bulk.