Selleys plastic-bond heavy duty bog is a multi-purpose plastic putty that can be used for building or repair work where filling, bonding or moulding is necessary. It sets in 20 minutes without shrinkage, after the hardener is mixed in. Heavy Duty Bog is a high strength building filler designed to support heavy loads, fill holes, cracks and splits in a variety of surfaces including metal, timber, brick, fibre cement, fibreglass, concrete, plaster, many plastics and more. It is also suitable for repairs to furniture, sporting equipment, cars, caravans and boats and can be cut, nailed, filled and painted. Stopping countersunk heads of fastenings in any material. Colour: Olive green/grey paste, Size: 150 g.