As on earlier Custom-Line Turnouts, the new Atlas Custom-Line Mark 4
Turnouts are constructed so that regardless of switch point settling both
branches are powered. Due to this the new metal frog is insulated and carries
no current. As on earlier Custom-Line Turnouts, most locos will span the
insulated frog without loss of electrical pickup; however, engines of extremely
short wheelbase or diesels with single-truck pickup may hesitate or stall at
the frog. The problem is easily overcome by equipping turnouts with an
Atlas Snap Relay (item #200) which, when wired to the remote switch machine,
will energize the frog with track current of correct polarity depending on the
switch point setting.

One HO Scale Nickel Silver Custom-Line "Mark 4" Right Hand Turnout
Track Piece

11-1/4" track piece veers to the right on one end, as a separate
track continues straight.
HO scale Custom-Line "Mark 4" turnout piece.
Track is made of black ties and nickel silver.
Universal rail joiner included.
Comes in a carded package.