Co2 Compressed Air Blow Off Duster Refillable Tank Adapter Computer Hobby Fast shipping anywhere in USA- We ship monday thry saturday A must for anyone's shop!/https://www.youtube.com/watch?v=dbj1n5xsBZU Refill for Compress air tank or Co2 paintball tanks is usually $3.00-$5.00 on any paintball or sporting good store. This handy unit screws onto any paintball CO2 or HPA tank (not included) and replaces a duster aerosol can at a fraction of the cost. Blast away any dust, dirt, and unwanted micro articles from computers, keyboards, printers, and other electronic equipments.