Flexible guard design – works with the Bosch 4-1/2 In. and 5 In. small angle grinders to for dust collection Concrete cutting – is part of the end-to-end Bosch PRO+GUARD Protection System Dust collection – reduces cleanup time and provides cleaner air for user Large, durable foot plate – greatly increases stability during use for clean and accurate cuts Single-screw depth adjustment – quickly adjusts and maintains desired depth of cut Works with 4-1/2 In. and 5 In. small angle grinders – compatible with GWS10-45/P/PD, GWS13-50/VS/VSP/P/PD, AG series and 1800 series grinders; 18 V cordless grinders: GWS18 V-45C/PC/PSC