The cuprinol ultra tough wood filler in natural provides professional-grade restoration for damaged wooden surfaces across interior and exterior applications. This 750g solvent-based filler hardens through chemical reaction, delivering permanent repairs for wet rot damage, major joinery work, and surface imperfections. Designed for versatility, the filler seamlessly fills knot holes, screw holes, and nail holes, creating smooth surfaces ready for varnishing, painting or staining. The fast-setting composition becomes workable within 10 minutes and fully dries within 30 minutes, accelerating project completion. The weather-resistant formula ensures long-lasting repairs that resist shrinking, splitting and cracking. Once dry, the filler can be sanded, drilled, screwed and nailed, offering comprehensive workability for demanding woodworking projects. Good adhesion to sound wood guarantees reliable, durable results. Features & benefits: suitable for indoor and outdoor wood restoration and major joinery repairs. Fast-setting composition: workable for 10 minutes, dries within 30 minutes for rapid project turnaround. Weather-resistant formula prevents shrinking, splitting and cracking in demanding conditions. Can be sanded, drilled, screwed and nailed once dry for maximum versatility. Effective for filling knot holes, screw holes, nail holes, and wet rot damage. Good adhesion to sound wood with solvent-based, non-shrinking formula. Colour: natural. Size: 750g.