NSS 33-9-051-1 17" Nylon Scrub Brush for NSS Wrangler 33, 3330 Walk Behind Scrubbers and Champ 3329 Riding Scrubbers. .028" diameter Nylon filament for general duty scrubbing of sealed concrete, painted and epoxy painted flooring as well as polished concrete floors. Nylon will not damage sensitive flooring surfaces. Nylon brushes outlast poly scrub brushes. Fits NSS Wrangler 33 and 3330 walk behind scrubbers and the NSS Champ 3329 riding floor scrubber. 16" brush block, 17" scrub path. Includes 3 drive lugs. Each machine requires two brushes. These are commonly bundled together to reduce freight. Priced each. Replaces NSS 3390511, 33-9-051-1. Our Part Number NSS 33-9-051-1