FeaturesUniversal vacuum attachment system compatible with 1-1/4 in, 1-1/2 in, 1-7/8 in, 2-1/2 in standard hose sizesAdjustable depth stop and ruler easily and precisely adjusts for accurate hole depthsDust extractor nozzle SDS Plus bit fits through nozzle deburring drilling to collect dustThis allows a standard wet dry vacuum to provide power and suction needed to remove dust as holes are drilled