Universal hardener compatible with all clearcoats and coloured finishing enamels, both acrylic and polyurethanic. High dry residual and excellent resistance to yellowing. C22 Slow, C15 Normal, C16 Fast, C17 Express.

Mixing ratio 2:1 by volume: two parts of Enamel or Clear coat with one part of hardeners.
With Enamels or Clear coats requiring mixing ratio of 3:1 or 4:1, it's possible to replace their
original hardener with HS hardener at 2:1 mixing ratio.

• Size: 0.5L / 2.5L
• Color: Colorless