Bosch 18SG-5E Surface Grinding Guard, Plastic, BlackThe Bosch 18SG 5E surface grinding dust extraction guard works with the Bosch 4 1 2 and 5 in angle grinders. This attachment is tool free, with a removable nose piece and a replaceable brush ring for low cost maintenance. Highlights: Color : Black Material : Plastic Specifications: 5 8 11 Size Arbor 20 Grit Type: Heavy Duty Dust collection reduces cleanup time and provides cleaner air for user Toolless attachment connects to compatible Bosch grinders