Add a signature covered hopper to your HO freight car fleet with the WalthersMainline 57′ Trinity 4750 3-Bay Covered Hopper! Based on prototypes built by Trinity Industries following their purchase of Pullman-Standard during the early 90s and still in service, features of this model include: One-time run of these roadnumbers, order now - limited quantity available! Prototypes introduced in 1990 - thousands still in service today Clerestory-style roof Late Trinity-style jacking pads and pulling tabs 1990s-era square cornered roof hatches Detailed hopper gates with vibrator brackets & outlets Perfect for serving Cornerstone(R) grain elevators, sold separately 100-ton trucks Correct 36′ RP-25 turned metal wheelsets Proto MAX(TM) metal knuckle couplers