DEWALT DWE46170 7-Inch Surface Grinding Dust Shroud Spring loaded; Hinged door; Provides a dust collection solution for both open area grinding and flush edge grinding Universal Connector locks onto tool with a twist and click Tool free clamp system is compatible with all DEWALT Large Angle Grinders Aids in dust collection and containment, a Perform & Protect Dust Feature Helps reduce user exposure to harmful Silica Dust