Concentric glue / Concentric circles solid glue

Usually we use of solid glue only a degree of finish, unless
Buy different degree of finish of solid glue; If have a fine to us
To paste, only have to take this a root solid glue inclined up sticky
Stick, of a long time, the solid glue front became very fine
And then to stick with thicker very difficult; Concentric circles solid
Glue to solve such problems and design.