Keystone 4.5 HP Self-Cleaning Hand-Held Indoor/Outdoor Dry Vac, Black Portable, household dry vac with 4.5 peak HP motor for indoor/outdoor dry use Fine dust filter with 2-stage filtration captures 90% of particles down to 0.4 microns 2-stage filter includes pre-filter and post filter 1.5-gallon collection tank - no bag needed On-board storage for wand/hose and accessories