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FABRICATED HERE IN OUR WORKSHOPS, STAINLESS STEEL AND POLISHED. TYPICALLY THIS SPACER WOULD BE FOUND ON SHOE BRAKE FRONT WHEELS FROM THE LATE FORTIES ONWARDS, IT WAS REPLACED WITH PART NUMBER 063918 WHICH IS SLIGHTLY BEEFIER (SAME COVER, HEAVIER BOSS). 063918 IS FINE AS LONG AS THE BEARING SPACER TUBE PROJECTS THROUGH THE LOCKRING. NM18551 HAS A SLIMMER INTERNAL BOSS THAT ENTERS INTO THE LOCKRING.
BOSS LENGTH: 5/32" (4MM)
DUST COVER OUTSIDE DIAMETER: 2 5/16" (59MM)
SPINDLE HOLE: .670" (17MM)
ALSO SEE 062448S, 063918S AND 066034.
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