Yokomo B10-011A Aluminum cramp wheel hex hub (4.0mm) 橫崛  [B10-011A]

This is often a BD10 standard aluminum clamp sort wheel hub. The hub degree is 4mm and it's really accessible in 2 pieces.

Supported Chassis
MRTC-BD10FF / MSR-BDFWD / MSR-010 / MSR-010A