Dewalt D25303DH Automatic Dust Extraction Unit The DEWALT D25303DH Cordless Dust Extraction System is ideal for dust free drilling up to 16mm in diameter and is powered by an independent motor maintaining maximum hammer performance with no decrease in durability. The extractor continues to operate for two seconds after the hammer trigger is released to ensure any debris in the telescope or hose is completely removed. The high quality washable HEPA filter is capable of achieving 99.5% efficiency with dust particles as small as 0.3 microns. Maximum extraction is maintained at all times regardless of the hammer speed. It has a compact and low weight design that offers excellent comfort and near perfect balance. It also has a quick release for easy tool free assembly. Body Only Supplied without battery or charger or SDS Drill. Features and Benefits: Completely cordless solution ensures this system can be used anywhere. Prevents dust contamination in environments such as houses, offices and hospitals. Enables drilling close to dust sensitive equipment. Minimises job site clean-up. Protects the operators eyes when drilling overhead. DeWalt DWH079D Dust Box Evacuator The DeWalt DWH079D-XJ Dust Box Evacuator features airlock connection dust management and safety and is compatible with SDS dust boxes in the D25303DH and D25304DH integrated extractors. This dust extractor can empty a dust box in less than 30 seconds and sits flatly on DeWalt extractors. Dust box evacuators are designed to empty onboard dust boxes and provide an easy solution to safely disposing of dust. Remove the dust box from your tool, slide it onto the Dust Box Evacuator, and turn on the vacuum to clear the dust box in seconds. Designed for professionals who use SDS Plus hammer drills regularly and want to shave time off the cleaning process. Features and Benefits: Airlock connection Compatible with sds plus dust boxes in d25303dh and d25304dh integrated extractors