These double aluminium rollers are intended as replacement pieces for 1/32 Mini 4WD machines. The emphasis is on aluminium material and surface finish rather than supplying bearings or spacer sets. Hobbyists will find these useful for matching aesthetics or replacing worn rollers while using standard roller posts on compatible 4WD chassis.
Aluminium construction changes how a roller reacts to contact and impacts compared with plastic versions; expect different stiffness and wear behaviour. Before installation, verify shaft diameter, spacer arrangement, and whether additional washers or bearings are needed for correct alignment on your chassis.
Fitting advice: ensure the roller clears surrounding bodywork and that your fastener length fits the roller stack. If your car uses bearings or thin spacers in other positions, check lateral movement after assembly and tighten appropriately to avoid unintended rubbing.
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