NSS 33-9-050-1 17" Bassine Scrub Brush for NSS Wrangler 33, 3330 Walk Behind and Champ Riding 3329 Scrubbers. Natural acid resistant bassine fiber scrub brushes are used for applying waxes and stains to concrete. 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 3390501, 33-9-050-1. Our Part Number NSS 33-9-050-1