Stair Tool, 30-inch, Rally 220 / 500 / 1200 (4097301).
Fits: NSS Stallion 818 SC, NSS Rally 220/220H, NSS Rally 500H, NSS Rally 1200
Genuine TASKI part number 4097301. Not sure it fits your machine? Send us your model and serial number at help@sweepscrub.com or call 877-449-0447 and we will confirm before you order.