Includes (1) Filter and Pre-Filter. New, Bulk Packed. Genuine OEM Black And Decker Replacement Part. Consult owners manual for proper part number identification and proper installation. Compatible with Black and Decker hand vac models : HSVB420J-CA, HSVB420J, STICK-VAC, HSVB520J, HSVB520J-CA. Customer favorite. Ideal for professionals. Top performance. Meets industry standards.