Bogies for NER Quad / Flat (cut-down GRF fit)

Spare bogies for my N-gauge / 2mm:1ft NER Quad (bolster) or Flat wagons. Uploaded on request. Please read the notes on those wagons for details; these are the same bogies just without the wagon body.
One pair has the NEM pocket on a shorter arm for use with standard NEM rapido adapter, the other for short NEM rapido adapter. The fixed rapido style are the same length on all of them. 
If you're considering these for the NER Quad bolster or NER Flat wagon that you may have bought without bogies, please note that these will only fit the versions of those wagons with the bogie pivots designed for cut-down Graham-Farish bogies, not the ones designed for N-gauge Society bogie fittings. You could possibly file these down to get the right ride height and enlarge the central hole slightly, but it would be a safer bet to ask me to upload the right sort of bogie.