100-Ton ASF Roller Bearing - 1 Pair
Walthers Part # 920-2011, p. 127 Walthers 2021 HO Scale Reference
HO scale, 

 
Designed with multiple springs and 36" wheels for higher capacity freight cars, this truck style has been in use since the 1960s. An easy upgrade for new and older HO Scale freight cars, these WalthersProto trucks are molded in low-friction engineering plastic, fully assembled and ready to use with 36" turned metal RP-25 wheels.