The HDC300 is a unique dust collection attachment which will fit on all Bosch SDS-max, spline combination rotary and demolition hammers with exception of the 11316EVS SDS-Max Demolition Hammer. The HDC300 is unique in that it allows the user to access the chisel for installation, removal and/or adjustment without removing the attachment. The shroud itself focuses air suction from the vacuum around the chisel for maximum dust collection. And thanks to a durable clamping band, the attachment is easy to install and adjust on all the Bosch hammers noted above. The attachment also features a metal extension arm which can be adjusted forwards or backwards to position it correctly around the chisel, and to accommodate different chisel lengths. The metal arm also provides added job-site durability. The shroud features a convenient rubber bumper at the tip of the shroud to provide cushion should it contact the work piece during use. The HDC300 comes in a kit that includes an extension tube and 3 adaptors to fit different sized hammers.