These are HO Scale Nickel Silver Rail Joiners by Atlas® FEATURES: For HO Code 83 and Code 100 track. Nickel silver universal rail joiners. Precision engineered. Pre-tested components. Small metal clips used to join two sections of track mechanically. INCLUDES: (48) Rail Joiners SPECS: Scale: HO 1:87 COMMENTS: Rail joiners also come in plastic (ATLU0055) which are insulated to isolate the two sections of track electrically. kr8/8/01 ir/jl updt kr1/3/05