Walthers Cornerstone
Sprung Plastic Freight Car Trucks w/Plastic Wheels

Diamond Arch Bar 1 Pair
Walthers Part # 933-1002, p. 238 Walthers 2012 HO Scale Reference
HO scale, $5.98, not currently in stock at Walthers, Expected: Unknown

 
Easy-to-assemble kits with black colored sideframes, bolsters and wheels. Sprung and equalized. Brass nonmagnetic axles.