These spring loaded nylon clamps are designed to be strong and durable, making them ideal for use during intricate work. The adjustable plastic jaws allow for a secure hold on a variety of materials, while the spring mechanism ensures that the clamp stays in place. The clamps are approximately 3 1/2 inches (85mm) in size, making them suitable for a range of projects. Whether you need to hold materials in place while you work or just need an extra pair of hands, these clamps are a great choice.