Turks Head -Striker Brush
Turks Head/Striker Brush 
A Turks Head / Striker brush has a distinctive round, angled head for awkward areas and slightly out of normal reach.
Two Knot Brush
Two knot Brush.
A brush where the bristles/ hair set separately or tied with copper wire. 
Used for applying distemper, limewash coatings also for washing down.
Two Pack
Paints requiring two components which react chemically when mixed causing the coating to cure-dry, e.g. epoxy/polyurethane/polyester fillers.
Undercoat
An intermediate coating applied after the priming coat, to provide a good key for finishing coats – main properties are to improve the film build and opacity.
Universal Colourant/Tinter/Stainer
Water-based stainers which can be used for colouring oil and water borne paints.