Bunn 29702.1000 Plunger Hopper Lock is a genuine OEM replacement part designed for Bunn beverage equipment, including models like CDS-2, CDS-3, Ultra-1, Ultra-2, and Ultra-2A.his plunger assembly ensures the hopper remains securely locked during operation, preventing spills and maintaining optimal performance.onstructed from durable materials, it contributes to the longevity and effic... https://www.partsfe.co.uk/bunn-29702-1000-plunger-hopper-lock