Sterile seven star skin needles This is also called a seven star needle and is actually a group of seven filiform needles arranged together in the shape of a flower and attached like a hammer head to a long handle. The handle is often flexible. Some types are disposable — others have a detachable head for sterilising. The needling is done by tapping the needles on the skin lightly and swiftly. The plum blossom needle can be tapped along a channel or at specific points.