The Cuisinart® Work Bowl Cover & Pusher Assembly Kit (FP-KIT11N) is used with our Prep 11 Plus™ 11 Cup Food Processor (DLC-2011CHBY), as well as the discontinued version (DLC-2011N). The cover is required to keep your food contained within the work bowl — and for your safety while the food processor is in use. The pusher assembly slides inside the feed tube, allowing you to process ingredients of various sizes. Replace your Work Bowl Cover & Pusher Assembly Kit when necessary, based on wear.