Spacer without rim centering collar. The rim is centered with a hub. which must be of sufficient length for this. Longer bolts or sleeve nuts may be required for wheel installation. which must be ordered separately (NB! Check. that the taper of the bolts/nuts matches the rim bolt hole - 60°. R12-. R13-R14 ball cone or flat. coneless hole). NB! When fastening with nuts, check. that the stud length is sufficient for wheel fastening - min 6.5-9 full turns (depending on thread pitch 10-15 mm). Manufacturer: Bimecc. Italy.