Simplify your next HO Scale track project using WalthersTrack Blackened Track Nails featuring: Sized to fit molded starter holes on underside of all WalthersTrack Code 70, Code 83 and Code 100 products (sold separately) Preblackened to easily blend with ties Each measures 1/2′ (1.3cm) long to easily secure track to subroadbed and benchwork Great value with 0.7oz (20g) - approximately 300 nails - in every pack Check out WalthersTrack and accessories here! Whether expanding your current layout or building a new one, check out these links for more information on the full range of easy to install and operate accessories in Walthers Layout Control System: See the entire system! Full Instructions