• Designed using the ERGO® process for comfortable and effective grip in various situations
• Maintains minimal tension throughout the tool's working cycle
• Precision control of handle width for easy tool pick-up and handling
• Customizable tension and opening width through three adjustable ports
• Exceptionally durable for everyday use, virtually indestructible

The spring is sold as each, it is the long curved spring shown in this image. The material is composed of a virtually indestructable plastic material. Biosprings are easy to install.