This is ONE (1) new old stock, 4" X 4" TRACK RAIL CLEANING PADS. Ultra Fine Hand Pad made by 3M for release by Aurora Marx products. Authenticity, quality condition absolutely guaranteed. Shining each and every rail prior to assembling a race track is invaluable to getting a good running system. Leave NO Blue Spots on your rails! The track rails should be uniformly SHINY as the cleaner the rails, the better the electricity flow and less vehicle stalls. Manufacturers like Aurora, TYCO and others typically used these pads as they worked well to burnish the rails but did not lower track Rail Height, which is what a file, or coin or sandpaper does. Once track-rail height is compromised, there is no going back, Typical ways to rejuvenate older track is to clean with Formula 409, Shine the rails Really well with a non-magnetic pad and WD-40 on a high quality rag to rub down the track afterwards, rejuvenates the plastic finish and works to repel moisture. Also works to clean pick up shoes or scuff bodies for paint or custom body work. Sold as is. Descriptions are very accurate; No Returns. PLEASE ASK QUESTIONS BEFORE YOU BUY IF YOU ARE UNSURE. We ship promptly professionally. We happily combine orders refund any excess s/h immediately upon shipping. We can always provide tracking. I charge $1 for expert handling/packaging, actual shipping. We ship out of the country almost daily. Please refer to our feedback, social media or time selling HO slot cars for assurances of a good honest deal. Happy motorin' thanks S'lots from Bob at Slot Car Central in SYR. We Know H.O.