Easily replace broken or missing snaps on tarps, covers, luggage, sports equipment & clothing * Heavy-duty nickel-plated steel snaps, 1/2" outside diameter, 1/4" center; rust resistant * Kit includes special mandrel and anvil for crimping centers; galvanized steel * 40 snap pieces - enough for ten complete top & bottom snaps; additional pieces available separately * Work great on canvas, nylon, denim, leather and other heavyweight fabrics