Track is the most important model on your HO Scale layout, and WalthersTrack makes it easy to create realistic mainlines, sidings and more! These rail joiners are correctly sized for use with WalthersTrack Code 83 and Code 100 flex track and turnouts and may not fit other brands of track. Joiners are preformed of nickel silver for outstanding electrical conductivity. Pack includes 48 ready-to-use connectors.