-Phase II has a small particle size glass filler which constitutes a high percentage of the material. -The paste forms a solid matrix that bonds stronger to itself than it does to the sealant. -As a result, the majority of the paste is removed with the bracket and what remains is easier to remove than conventional composites. -Phase II has a unique catalyst system that does not require refrigeration. -An active archwire can be placed 5 minutes after last bracket is in place. **For further product information, please contact Chat Support**