This set includes a dust collection bag that converts your DUB 182 into a vacuum, so you can use it to collect the dust and dirt as well as blow it away! High/Medium/Low air volume settings. Uses 18V Li-ion battery as a power unitVariable speed trigger3 x air volume settings (High/med/low) Increased air volume Compact and lightweight for single handed operation Soft grip provides increased comfort on the job Battery protection circuit protects against overloading, over-discharging and over-heating Vacuum functionBare unit - batteries are charger available separately.