Multi-Purpose Premium Joiners Grade Wood Filler is an easy to use ready mixed filler ideal for filling small imperfections (max 5mm depth) in wood. Once dry, the filler leaves a sandable surface, which can be stained, painted, varnished or dyed, even with microporous stains. The filler is waterproof when dry and hence is suitable for exterior as well as interior applications. Used for: - Filling small holes, splits, surface imperfections and damaged areas in wood - Covering the recesses left by nails and screws 1 x Multi-Purpose Premium Joiners Grade Wood Filler Light Stainable 250 ml.