EXAIR's Model 6097 Heavy Duty Dry Vac Only consists only of the Heavy Duty Dry Vac vacuum without any of the fittings, features, or accessories that make up the Heavy Duty Dry Vac System. Designed for tough industrial environments, the hardened alloy construction resists premature wear while the increased power handles difficult jobs and harsh conditions. Heavy Duty Dry Vacs do not use electricity and have no moving parts, assuring maintenance free operation.