Introducing the Rosner DD-Hardener 45, specially formulated for use with Rosner solvent-based products. This high-quality hardener comes in a convenient 2.5-liter container, making it perfect for both professional and DIY applications. Enhance the durability and finish of your projects with this reliable hardener, designed to ensure optimal performance and longevity. Ideal for various surfaces, the Rosner DD-Hardener 45 is your go-to solution for achieving exceptional results in your painting and finishing tasks.