The top adjustable bearing is complete with brass insert and adjusting nut - the bottom bearing is a fixed unit.
1974 Wrenn Model Railway Catalogue 2nd Edition & Price List VGC
1976 Wrenn Model Railway Catalogue 2nd Edition & Price List - In VGC
Wrenn Model Railway Trackwork Book
1977 Wrenn Model Railway Catalogue 3rd Edition & Price List VGC
WRENN model railway thirty two (32) Wheel axle insulators
WRENN model railway THIRTY TWO Con Rod Pins
