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 Completely tool free – Compatible with all 1800 series 4 ½" & 5" Small Angle Grinders Bosch AIRSWEEP™ Vacuum Compatible - Plug and play without using adaptors