Universal Quick Multi-Function Connector: DWV9000 universal connector fits dust extractors, vacuum hose, various DW tools and shrouds, allowing easy and durable connection between 1-1/4 inch components Bearing Lock and Unlock Mechanism: Features a bearing lock/unlock device on the adapter ring that needs to be screwed to the unlocked position before sliding it into the dustproof port Wide Model Compatibility: Fits models compatible with DWE4597, DW46152, DWV010, and more, forming a secure locking connection with all dust-compatible tools and accessories through the universal connection system Replacement Part Number: Replaces old part number DWV9000 for seamless compatibility with existing dust extraction systems Precise Dimensions: Small end measures ID 1.7 inches and OD 1.875 inches, large end measures ID 1.7 inches and OD 2.28 inches, with overall height of 4.4 inches