NSS 28-9-221-1 20" Short Trim Poly Tufted Pad Driver for NSS Wrangler 2008, 2016 Series Walk Behind Floor Scrubbers. Short tufts of tough polypropylene filaments "stab" into your floor pad to hold it securely to the floor machine. 20" diameter block includes clutch plate. Fits NSS Wrangler 2008 and 2016 series scrubbers (including AE, AB, DB, Electric, Brush Assisted, Pad Assisted, and Wheel Driven variants). Includes 5" diameter spin-on clutch plate. One pad driver required per unit. Priced Each. Replaces NSS 28-9-221-1, 2892211. Our Part Number NSS 28-9-221-1, NSS 2892211