The Bostik All Purpose extra strong adhesive is a multi tasking extra strong, quick drying clear adhesive that will stick a variety of household materials. it is ideal for repairing household items and for craft and office use. How to use: Make sure the surfaces to be bonded are clean, dry and free from dust, dirt and grease. To bond non absorbent such as metal or glass apply a thin firm adhesive to both surfaces. Allow 5 to 10 minutes drying time and then, having correctly positioned the surfaces, press them firmly together. If one or both surfaces are absorbent apply a generous film of adhesive to one surface only and immediately join the two surfaces together under pressure.