Bosch GA50DC Small Angle Grinder Dust Collection Attachment, 4-1/2" to 5" Best-in-class dust collection reduces clean-up time and provides cleaner, safer air for user Large, durable foot plate greatly increases stability during use for clean and accurate cuts Single screw depth adjustments quickly adjusts and maintains desired depth of cut Toolless installation is compatible with AG and GWS series 4.5-Inch and 5-Inch small angle grinders Compatible with Bosch vacuums with no need for adapters