<https://victoryspring.ca/shop/compression/9-3216-36/#product>
<http://schema.org/description>
"Product Features: High tensile strength chrome silicon material, rectangular wire design allows high force and long life.\n\nPart #: 9-3216-36\nHole Diameter: 2\nLength: 4\nRod Diameter: 1\nSpring Rate: 2310\nMax Safe Travel: 1\nMaterial: Chrome Silicon"
<https://victoryspring.ca/shop/compression/9-3216-36/>