2-141HO Unitrack 4-7/8″ (123mm) Concrete Straight Track4 pieces per packageKato’s line of ground level UNITRACK offers a variety of pieces and turnouts to allow you to build any layout your heart desires, all while ensuring track quality and steady delivery of electricity to your locomotives. Available both as individual pieces and as track sets, let Kato UNITRACK be the first track you put down, and you may never use another track again!