- For 4:1 temporary crown & light. - It is completely operated by hand, leggier-design, and easy to be taken. - It is used as a catalyst for mixing impression materials, silica gel, self-solidifying compound resins, etc. - Two-component dispensing guns can avoid pollution when it is used for mixing adhesives, fast-occlusion silica gel, and various impression materials. - Country of origin: China. **For further product information, please contact Chat Support**