Brushes and Rollers in a variety of sizes | Rayplex Limited .5 " (13 mm) Chip Brush Our smallest basic quality disposable brush. Don't let the small size fool you into thinking this is an inferior product. Our products are all shop tested! This brush conveniently fits the Rayplex 8 oz mixing tub. Bristle size: 1/2 inch (13mm) Part 66350