Intramuscular Injection Model This high-tech medical model with realistic skin is perfect for teaching proper injection techniques and how to avoid nerves and veins. The see-through right side of the model shows internal structure including bones, muscles, nerves and veins. Correct intramuscular injection sites can be palpated. A green light indicates correct injection technique and positioning - a buzzer and flashing red light warn students if they have gone too deep or needle position is incorrect. Dimensions: 15" H x 13-3/4" W x 8-1/2" D. One-year warranty.