Original Black & Decker / DeWalt blade support disc — part 1004758-71. This complete blade‑support / mounting plate sits beneath the mower blade to restore correct alignment and stable rotation; moulded from durable polypropylene for impact resistance and corrosion-free service.

Key fitment and size details: designed for Black & Decker BEMWH551 hover mower (Type 1) . Approximate dimensions: 210 mm (length) × 170 mm (width); supplied as the full blade‑support assembly so you can reinstall the blade using the original mounting points.

Easy to swap in — replace a cracked or warped support disc to stop blade wobble and restore an even cut.