SiliClone X-act Impression MaterialX act combines the accuracy and dimensional stability of the S 50 cartridge material with the expansion properties of the Pink Silicast syringe material. It is easily expressed from a manual impression gun. X Acts flow characteristics are more like those seen in a higher viscosity syringe material than the typical cartridge material. * Uses Model DS 50 Gun Features Vinyl polysiloxane material Medium to Low viscosity Shore A hardness of 20 22 3 4