Suitable for all kinds of tubular packaging (red glue, silica gel, glass glue, etc.), can be manu-ally operated, can also be equipped with dispensing machine operation. The sleeve is treated with aluminum alloy anodizing and blackening, which is not rusty, light in weight, good in sealing, labor-saving in manual operation, and improves production capacity. The whole glue is put into the barrel and the glue is punched out through air pressure. Toothpaste metal sleeve: can be used with various needles