The 4-1/2 to 5 in surface grinding dust shroud kit features the DWE43131 13 A grinder and DWE46152 dust shroud. The 13 A grinder is part of the PERFORM & PROTECT™ line of products with the anti-rotation E-CLUTCH® system. The E-CLUTCH® system helps protect the user in bind up situations by shutting down the tool. The 5 in surface grinding dust shroud features a flush grinding door which allows the user to perform flush edge grinding while collecting dust. DeWALT® DWE46155 Surface Grinding Dust Shroud Kit, 4-1/2 to 5 in dia Wheel, For Wheel: Quick-Change™