NS 2970cf 2-Bay ACF Center Flow Covered Hopper # 235191. - Features - Model Based on Original Drawings, Paint & Lettering Recreated from Photos, Drawings & Field Research, Appropriately Weighted for Smooth Operation, Wheel Flanges Compatible with Code 55 Track, & McHenry Knuckle Spring Couplers with Magnetic Uncoupling. - Athearn Item # ATH 12495. - MSRP $25.98 - OUR PRICE $22.99.