A vacuum extension kit that converts the Nitecore BB Nano blower into a small vacuum, so instead of blowing dust around your gear you collect it. The 3-in-1 design adds a dust bin plus two nozzles — an extended nozzle for narrow, awkward spots and a brush nozzle that loosens debris as you vacuum — with a 250-mesh filter keeping grit out of the air duct. It twist-locks onto the BB Nano in place of the bottom filter. Note that it is an accessory: it requires the BB Nano blower, which is sold separately.