SMITH BEARING Track Roller: 2.5 in Roller Dia., 1.3125 in Roller Wd, 0.75 in Stud Dia., Concentric - 15U579|VCR-2-1/2 - Grainger
SMITH BEARING Track Roller: 4 in Roller Dia., 2 in Roller Wd, 1.25 in Stud Dia., 2.75 in Stud Lg - 15U573|FCR-4 - Grainger
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