Use a Harris Extension Pole to cover a larger area faster when working with this kit. For best results lightly rinse the roller sleeve in water before use to remove any loose fibres. 4 sleeves gives you the flexibility to swap between paint colours or still use one sleeve whilst you are cleaning the others Use with Emulsion paints. The roller sleeves in this set have been developed to give a great finish with reduced splatter for less mess and the medium pile is ideal for use on semi-smooth surfaces such as older plastered walls and walls with spots of repair damage. This Seriously Good 9 inch roller set has a soft comfortable grip and 4 x medium pile roller sleeves to give an even finish when painting with emulsion paint.