Dewalt d25302dh 36v dust extraction system dewalt d25302dh xj this 36v dust extraction system from dewalt has been designed for dust free drilling up to 16mm in diameter with any dewalt 28v or 36v sds plus hammer br br it is powered by an independent motor maintaining maximum hammer performance with no decrease in durability the high quality washable hepa filter is capable of achieving 99 5 efficiency with dust particles as small as 0 3 microns while the quick fit system allows easy too