External Dust Extraction Device - The Crevice Nozzle is specially designed for accessing hard-to-reach areas. It is ideal for reaching into corners and grooves. The Crevice Nozzle connects to dust extractor tubes for Bosch dust extractors. Features and Benefits: • External Dust Extraction Device • Crevice Nozzle is specially designed for accessing hard-to-reach areas • Ideal for reaching into corners and grooves Specifications: Diameter: 49,0mm