1 it is made of pp and pe 2 it is used by glue gun and glue machine 3 it is convernient ... cartridge, Two-component CartridgesSize: 50ml (1:1, 2:1), 200ml (1:1), 235ml (10:1), 345ml (10:1),360ml (5:1), 400ml (1:1), 400ml (2:1)Material: PA or PPFeatures: good ... seal ability 50ml(2:1) dual cartridge/ ...