M-Wave train station Utrecht HC. The M-Wave Utrecht HC is a drive case from the Hardcase series. These are sturdy and shockproof boxes and bags for different purposes. The bag is provided with a transparent detachable roadmap holder on the top. Specifications: Color: black Material: plastic Dimensions outside: 27 x 16 x 20 cm (LxWxH) Capacity: 8 liter Suitable for steering diameters: 22.2 to 31.8 mm. Provided with shoulder strap. With a separate inner pocket.