9 Prong Needle, for FTP, FTPA (Hair Stroke Use), 30/Box Used with (FTPA) Feather Touch Aluminim Pen . It is designed to create slanted strokes. The needles are made of a high quality grade and 316 stainless steel material, in 0.2 mm sharp needle size. Individually sealed and gamma radiation sterilized. 30 per box.