Detail new or existing HO sidings and more in minutes with the Assembled Track Bumpers from WalthersTrack, featuring: Perfect protection for industrial spurs, yard tracks, passenger stations and staging yards Fits popular modeling eras from the 1940s to the present Available in two authentic colors Four layout-ready Bumpers in each set Use with WalthersTrack(R) Code 70, Code 83 or Code 100 and most other brands of HO track (sold separately) Please Note - these models are based on prototype units used to keep cars from rolling off the end of track, but are not intended to stop a locomotive or train. Check out WalthersTrack and accessories here!