This 8.5” Drywall Texture Shag Stipple Brush is ready to use from the package.  The shag drywall texture brush is made of horse hair/poly blend filaments and is pre-formed (flattened) and geometrically designed to create starburst-like drywall textures.  The base is a non-rot, non-chip plastic block with female 3/4" coarse threads for attaching an extension pole. All brushes have step-by-step instructions on the back of the packaging.  This brush is used for leaving impressions in the compound – not to apply compound to walls or ceilings.