... twin countershafts driving in Front section and Auxiliary section of transmission, Floating mainshafts (M/S) and gears ... bearing on all gears, M/S.Big arc bottom of teeth on all gears in the Front section ... be equipped with all kinds of types of front all power PTO, side PTO ,bottom PTO, side PTO and ... two series transmission can be used for all kind of truck , dump truck , container transportation truck ...