Makita 191D46-2 Mulching Plug for DLM382 and DLM432 Cordless Lawn Mowers The 191D46-2 Mulching Plug is used to block the grass clippings exit channel. This allows for freshly cut grass to be cut into smaller pieces and deposited as fertilizer. The Mulching Plug installs easily for user convenience.  FEATURES Holds freshly cut grass under the deck allowing the grass to be cut into small pieces  Designed to be placed behind the rear door to block the grass clippings exit channel Easy installation Compatible with DLM382 and DLM432 models