Bosch GDE 16 PLUS Professional Dust Extraction for virtually dust-free drilling with SDS-plus. Easy handling: connection to SDS-plus hammer and dust extractor with only one click. Works with all 2kg and 3kg Bosch SDS-plus hammers with a 50mm collar. Specifications: Max. Drilling Depth: 120mm. Diameter of Bolt Circle: Max. 16mm; with core drilling Max. 82mm.