【Perfectly Compatible】: Compatible with Black Decker BSV2020 Series BSV2020G/BSV2020WAPB Cordless Vacuum Cleaners. 【Quality Replacement Parts】: Quality parts to replace your old or damaged parts to protect the proper functioning of your vacuum motor. 【Scheduled Changes】: For optimal performance, it is recommended to replace the filter every 2 months and when it is worn or damaged to increase the suction capacity and life of the vacuum cleaner. 【Easy to Install】: No tools required, simply remove the old vacuum filter and install the new one in place! It only takes a few minutes, saving time and energy. 【Package Contents】:8 x Filter Elements