CL 30394A 15" Poly Scrub Brush with Gimbal for Clarke Encore L30 Series Walk Behind Floor Scrubbers. General duty .028" polypropylene filament is perfect for economical, general duty, everyday scrubbing tasks. Polypropylene filaments are great for light duty scrubbing of unsealed concrete, vinyl, tile, and most hard surfaces. Poly brushes can also be used for cleaning textrued flooring and rubber flooring. For highly polished or urethane flooring, use the soft nylon brushes (CL 30395A) to prevent any possible marring. Fits Nilfisk Clarke L30 series (will not fit S30 floor scrubbers, use CL 30470A, 15" Polypropylene) scrubbers which require two 15" diameter scrub brushes equipped with the brush drive gimbal (CL 833802). The drive gimbal can be identified by it's raised slotted circular featrue, sometimes encircled by a metal brush retaining ring (CL 833801). These gimbal brushes "snap" up onto the brush drive motor rather than "twist" on like a conventional clutch plate equipped brush. 15" diameter scrub brush with a 1-3/4" trim. Priced Each. Replaces Nilfisk Alto Clarke CL 30394A. Our Part Number CL 30394A