This is 1 1/2" x 18" or 450mm long Falcon 316L stainless steel very flexible connector with female BSP nuts on each end. Suitable and recommended for water between 0 and 95 degrees C at pressures to 200 psi or 1,400 kPa, we use the Falcon flexible connectors to quickly and safely join pumps to tanks and filters as they can be adjusted by hand into nearly any angles. 1 1/2" x 18" is 1 1/2" female BSP on each end and 450mm or 18" long. Falcon flexible connectors are a single sheet of 316L marine grade stainless steel that is formed and manufactured without any internal hose of any kind, it is just 316 stainless steel so it wont split, rust, kink or crimp. Easier, cleaner, better looking and faster than old style rubber hose with clamps, the Falcon Flexible Connectors are made in the USA and carry a lifetime performance warranty. The 1" rotating nuts on each end contain a captive EPDM washer to make a perfect seal.