Treal Hobby (X003KV3SDD) Black Aluminum Rear Axle Housing with Red Diff Cover for TRX 4m Chicago NorthWestern Common prototype design used with Common prototype design used with various types of bridges The inspiration for our latest laser cut creation comes from Paul Larson’s “Pickle Works” article in the January 1955 issue of Model Railroader and David Leider’s “Building a Pickle Salting Station” article in the March 2009 issue of Railroad Model Craftsman along with numerous prototype photos and personal recollections of individuals who labored at these salting stations Comes with the bearings for the axle housing for easy installation and smooth operation High quality of Aluminum 7075 material