949-4157 - Hay Bales - 20pc (HO Scale) Round Hay Bale Bring rural areas to life in minutes with this set of 20 Round Hay Bales! Fully assembled and ready to add to scenes new or old, each features a realistic color and texture. Perfect for detailing fields and farm scenes, they also make great loads for boxcars, and flatbed wagons or trucks. Includes: 20 pieces.