New Spreader Transmission (part #75625). SnowEx uses this on a number of different spreaders including SP-125, SP-225, SP-325, SP-575X, SP-1075X, SR-110, SR-210, SP-225-1, SP-125-1 and SP-100-1. Western uses this transmission in the Low-Pro 300W spreader and Fisher uses it in the Quick-Caster 300W. This kit comes with all the hardware needed.