hose connector 3d model

Create a precise parametric 3D CAD model of a STRAIGHT INLINE FUEL HOSE BARBED REDUCER, shaped like the letter "I". The connector must be completely straight from one end to the other. It must NOT be an L-shaped connector and NOT a T-shaped connector. FUNCTION: It is a hose-to-hose joining/reducing connector. One flexible fuel hose connects to one end and another flexible fuel hose connects to the opposite end. INTERNAL BORE: - One end: exact internal diameter = 9.00 mm - Opposite end: exact internal diameter = 8.50 mm - Both bores must share exactly the same center axis. - The internal passage must be completely open from one end to the other. - Create a smooth internal transition between 9.00 mm and 8.50 mm. - Do NOT add any perpendicular holes or branches. EXTERNAL SHAPE: - Straight cylindrical inline connector. - Overall shape resembles the letter "I". - Both ends point directly opposite each other. - No 90-degree bends. - No T-junction. - No side outlets. - No threads. - No mo