NOS (New-Old Stock) Dia-Compe Bicycle Brake Half Moon Washer/Spacer with larger hole for recessed nut mounted applications
BMX bicycles typically do NOT use a recessed nut on the rear brake (and have no way to do so without drilling the backside of your mounting hole larger), but this is common for high end road bikes.
Dia-Compe part number: B58A
Dimensions: 8mm I.D. X 15mm O.D. - thickness ranges from 2mm in the trough of the radius to 5mm at the top
MADE IN JAPAN
SOLD INDIVIDUALLY (with no retail packages - these came in shop packs originally)
THERE ARE NO RETURNS ACCEPTED ON NOS (NEW-OLD STOCK) ITEMS. PLEASE REVIEW THE PHOTO, THE ABOVE DESCRIPTION, AND ASK ALL QUESTIONS (at firstname.lastname@example.org) BEFORE PURCHASING.