They are known by this method as "Dual Form". They can be used with Acrygel, Gel, and Polygel. Dual Forms are plastic reusable molds. They are shaped in such a way that the material does not stick to them and are flexible so they can be removed after application.

Ideal for Poly gel, but can also be used with Gel, even with acrylic. Give your manicure the shape you desire easily and quickly!