... . 2.Near 100% emptying. 3.Can be used in all angles. 4.Less noise when spray. Bag on valve for aluminium canSpecifications ... "Valve, Mounting Cup, Outer gasket, Inner gasket, Stem, Spring, Housing, Bag-on-valve connector, Aluminum foil pocket(4 layers). Material Tin ... 100% product empty 4)No need for flammable propellant 5)Can be used in all angles 6)Less noise when spraying ...