DCC Concepts ~ Back to Back ~ Sn3 or HOn-35 (Standard) 12.4mm ~ DCG-BBSN
Brass Back-to-back gauge for SN30 or HOn3.5 or Narrow gauge (14mm track) (3’0″ gauge S Scale or 3’6″ gauge, HO Scale. set to NMRA standards)
Brass Back-to-back gauge for SN30 or HOn3.5 or Narrow gauge (14mm track) (3’0″ gauge S Scale or 3’6″ gauge, HO Scale. set to NMRA standards)