These are spray thru caps and can be used on 57 dia tin-platted cans. The packing will be 600 caps per carton. These are predominantly used for flying insect insecticides.
Our Products - Caps
Hunk57 / 57H1
It also comes with and attachment of wand and extension tube for crawling insect aerosols. Besides insecticides, it can be used furniture polish / paint aerosols.