A snowmobile has a frame assembly. A set of conveying tubes is supported within the dispensing device and collectively present a predetermined total cross-sectional flow area to the first distribution chamber. An annular stretchable portion is provided at a portion connecting the small diameter cylinder portion to the radially outward extending portion. Generally, the medical system including a housing, first and second jaws rotatable relative to the housing, a driver, and an elongate drive wire. According to the invention, said bearings share a common rotational axis and at least one first bearing ring of the first bearing and a second bearing ring of the second bearing are rotationally fixed in relation to at least one bearing seat.