Whether it's scuffing, fine sanding or preparation for polishing – the improved technology of 7940 siaair is the key to a perfect finish in damp and dry sanding applications.•High stock removal rates and excellent finish•Low clogging in damp and dry sanding applications•Highly adaptable to contours, curves and profiles•Pressure-equalising foam gives perfect surface finish•Waterproof and washable•Resistant to silicon remover