1. PRF-T / Practice Finger, Tipped 2. PRF-S / Practice Finger, Slotted Practice fingers come Tipped (free edge) or Slotted. They are used for practice nail application. (100 pieces per bag, 10 bags per case) 3. PH / Practice Hand Practice hand is used to practice nail application. (50 pieces per case) 4. PH-D / Practice Hand Deluxe Practice Hand Deluxe is used to practice application of nail tips. Lifelike piece. Hand swivels on plastic base.