A New Spreader Spinner Disc # 75618 kit. You get spinner disc D6750 and clevis pin D6746.
This is used by Western, Fisher and SnowEx on various salt spreaders.
Western uses it on the Low-Pro 300W, Pro-Flo 525 and Pro Flo 900.
Fisher uses it on the Quick-Caster 300W and the Speed-Caster 525 and 900.
SnowEx uses it on the 575X, the 1075X, the 575V, the SR-210, the SP-1575, the SP-1875, the SP-100, the SP-125, and the SP-225 in addition to the -1 newer versions of these spreaders.
Curtis part # CS1P18
Meyer 10.75 EZ-flow spreader part # 37212
This disc measures 11" inches in diameter. It comes with the 3/16" x 1-1/4" clevis pin for attachment. In some cases this is used along with Auger 75615.