Futuristic design concept of metal plastic limb. A robotic mechanical arm look like a human hand. Hand Showing number one with finger. Counting down sign gesture. Template Isolated on white background Shutterstock . vector - Futuristic design concept of metal plastic limb. A robotic mechanical arm look like a human hand. Hand Showing number one with finger. Counting down sign gesture. Template Isolated on white background - ID: 343355735