Product function:for DC5151H DC515 DCV517 DCV517B for -Half-Gallon Wet/Dry Vacuum. Application:for DC5151H DC515 DCV517 DCV517B for -Half-Gallon Wet/Dry Vacuum. The washable filter can be washed or rinsed with tap water or water, and its unique design allows it to stay in the vacuum, whether you use a vacuum cleaner to dry debris or wet spill.