This unit may be fine if its pump system (loud) and seal (rubber seal instead of gasket basic foam) were efficient, unfortunately this is not the case, solder side / cut bags, it works with adjustable intensity. Not recommended so if the setting "vacuum" is a primordial point. This unites Could be great if icts noisy pump system and seal (rubber seal INSTEAD of the basic foam seal) efficient Were, Unfortunately this is not the case, solder & cut work bags with adjustable power. Not to be recommended if the setting "vacuum" is the main purpose of this buy.