BLACK+DECKER 12-inch Removable Mower Deck MTD100 for 12" String Trimmers — Tool-free Attach, Narrow Swath

The BLACK+DECKER MTD100 is a 12-inch removable mower deck that converts compatible string trimmers into a compact mower for yards up to about 700 sq ft.

The MTD100 turns select BLACK+DECKER 12" trimmers and edgers into a small-area mower in seconds, giving a lightweight, easy-to-store cutting solution for tight lawns, slopes, and edging-sensitive spaces. This detachable deck adds mower capability without buying a full push mower — it’s an accessory that expands the versatility of your existing trimmer models.

How does the deck convert a trimmer into a mower?

The deck mounts around a compatible 12" trimmer head and creates a guarded cutting chamber that mimics a small mower. Installation is tool-free on supported BLACK+DECKER models, and the deck secures to the trimmer shaft for stable cutting action.

• Fits specific 12" trimmers and edgers (see compatibility list).
• Quick attach/detach design for fast swapping between tasks.
• Encased deck reduces flying debris compared with a bare trimmer head.

What cutting height and pattern can I expect?

The MTD100 offers two height settings so you can choose a closer or slightly taller trim depending on turf and conditions. Because it uses the trimmer’s line, it provides a clean, narrow cutting swath ideal for small plots, walkways, and trimming next to beds.

• Two-position height adjustment for basic cut control.
• 12-inch cutting width suitable for small lawns and courtyards.
• Delivers a narrow, maneuverable swath for tight spaces and slopes.

Which trimmer models are compatible with this mower deck?

The MTD100 is designed to attach to a select group of BLACK+DECKER 12" trimmers and edgers. Confirm your model number against the compatibility list before purchase to ensure a proper fit and safe operation.

• Compatible models: NST2118, LST220, LST300, LST400, LST522, LSTE522, LSTE523, LSTE525.
• String trimmer is not included; the deck is an add-on accessory only.
• Check your trimmer manual for compatibility notes and mounting instructions.

How does storage and maintenance work for the MTD100?

The deck includes a wall-hang feature that keeps it off the ground and out of the way when not in use, which is ideal for small garages or sheds. Routine maintenance is minimal: clear grass buildup after use and inspect the mounting area for wear or line fragments.

• Built-in wall hanging point for compact storage.
• Easy to clean — wipe or brush out clippings after each use.
• No extra blades to sharpen; uses the trimmer’s line as the cutting element.

Who this accessory is for: The BLACK+DECKER MTD100 removable mower deck is built for homeowners with small yards, rental property managers, or anyone who already owns a compatible BLACK+DECKER 12" trimmer and needs a compact mower option. It’s especially useful for properties up to roughly 700 square feet, narrow lawns, sloped terrain, and landscaped areas where a full-size mower is impractical. If you want to expand the functionality of your trimmer without adding a separate machine, the MTD100 offers an affordable, space-saving solution.