<https://www.vacuumsupplier.com/product/wholesale-kf-50-vacuum-bellows-hose-48-inch-iso-kf-flange-size-nw-50-stainless-steel/#product>
<http://schema.org/description>
"KF-50 Ordinary Bellows Hose\r\nISO-KF Flange Size: NW-50\r\nCommon Dimensions: A = 48″ (1200mm)\r\nThickness: 0.25mm\r\nMaterials: 304 Stainless Steel\r\nApplication: Vacuum Equipment"
<https://www.vacuumsupplier.com/product/wholesale-kf-50-vacuum-bellows-hose-48-inch-iso-kf-flange-size-nw-50-stainless-steel/>