Andiker Cat Spiral Spring, 12 Pc Cat Creative Toy to Kill Time and Keep Fit Interactive Cat Toy Sturdy Heavy Plastic Spring Colorful Springs Cat Toy for Swatting, Biting, Hunting Kitten Toys

Description:
Each small spring is elastic enough to spring up with a single touch. When you're away from home, it's time to let cats spend a long, boring time with these toys. Don't be a fat, lazy cat. The more exercise, the healthier.
The length of compression of the spring is 0.616in;
The spring normal length is 2.137in;
The diameter of the spring is 0.868in;
The thickness of the spring is 0.078in.