4MA102 Return Crank Set LMS (SKF)

4mm scale return cranks for Romford/Markits driving wheels. Machined in stainless steel, they screw directly into any Romford or Markits driving wheel pre-drilled and tapped 10BA. The crankpin has a machined hexagonal end onto which fits the crank arm with a machined hexagonal hole, allowing variable positioning of the arm. Locked in place with a flanged screw. No soldering required. 14BA nut spinner needed for assembly. LMS type with SKF roller bearing small end.