The CRAFTSMAN 16 & 20 Gallon General Purpose Dust Collection Bags for wet/dry vacs are designed for pick-up of everyday dirt and other dry debris. They help contain all the debris from your home improvement projects, big or small and keep your shop vac from blowing the fine particles back into the air. Bags are easy to install by attaching to vacuum port inside tank without needing tools and are even easier to toss away. Includes 3 dust bags.