This is a Black, 60cm low pressure hose with 3/8" regulator fitting. This size is the standard LP inflator length.
Miflex are the manufacturers of the Xtreme high performance range of diving hoses. These hoses are designed to be flexible and robust, protected against snags and abrasions by an external nylon safety braiding. XTREME hoses are subject to more than 30 individual safety and specification checks, and have average lifespan 3x longer than traditional hoses.