This is an RC-scale wheel hex adapter set made for use with the AXIAL RR10 Bomber platform, designed to widen wheel spacing by 25mm total to improve lateral stability on crawling courses. The adapters accept wheels with a 5mm hub hole and are intended to mount on 4mm threaded wheel shafts, providing a simple way to change track width without modifying hub geometry.
The parts include an internal Delrin collar to locate the hex on the shaft, an O-ring on one face for preload, and a spring steel retaining ring with spring and washers plus a stainless steel screw to keep the assembly secure under traction. These hardware elements help prevent the wheel from slipping on the hex during heavy crawling loads while keeping the component set serviceable for routine checks and adjustments.
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