ALL "TEXTURED" CURVED MAGNUM NEEDLES: 1. ARE MADE OF SURGICAL GRADE STAINLESS STELL 2. USE 12- GAUGE NEEDLES 3. COME (50) PER BOX 4. ARE INDIVEDUALLY PACKAGED FOR SINGLE USE 5. ARE E.O. GAS STERLIKZED, READY TO USE THE "DIMPLING EFFECT" ON THE NEELDES ALLOWS MORE INK TO GATHER ON THE NEEDLE TIP.